Flies: Lime Trude

Lime Trude Fly Pattern
Lime Trude

Summer is creeping slowly into the Smokies and fly patterns are beginning to shift again. In late spring and summer, nearly everything that hatches is brighter in color. Most of the aquatic insects you see are some shade of yellow or bright green. It certainly makes sense to fish fly patterns in the same color profile.

As I’ve mentioned before, fly patterns are hardly the most important piece of the puzzle when trout fishing in the Smokies. Approach and presentation is the name of the game here. The wrong fly presented well will always catch more fish than the right fly dragging across the surface. But if your presentation is solid, it stands to reason that showing the trout a fly that looks a little more like the naturals they are seeing will produce far more strikes.

Since hatches in the Smokies are rarely heavy enough to make the trout key in on specific insects, color and size are really the most important components of fly selection. And since we tend to fish a lot of riffles and pocket water in the summer months, buoyancy and visibility can be extremely beneficial as well. While there are a number of fly patterns that meet all of those needs, one of my favorites is the Lime Trude.

The Lime Trude is just one of many variations of what was originally a wet fly designed by Carter Harrison. In the early 1900’s, on a trip to the A.S. Trude Ranch near Big Springs, ID, the fly was apparently created as a joke. He used red yarn from a cabin rug as the body and reddish dog hair for a wing. The fly was an instant success and eventually upgraded to more common fly tying materials. That included a tail and hackle, converting it to more of a dry fly dressing.

The fly became a staple in the Rocky Mountains and evolved, as most patterns do, with the increased availability of more diverse fly tying materials. It seems a number of great fly tiers, including Dan Bailey, had a hand in the evolution of the fly we know today. The Royal Trude is the most popular. Essentially, it is just a hair wing version of the classic Royal Coachman. The Lime Trude, which gained notoriety after winning the Jackson Hole One-Fly Contest (I believe in the late 80’s or early 90’s), is probably a close second in popularity.

Much of the fly fishing history in the Smoky Mountains was not recorded. It is difficult to say just when the fly first made an appearance on our streams. But it has certainly been catching trout for many decades. For the purposes mentioned above, it has everything you need. The bright, greenish-yellow body looks like a lot of what the trout see this time of year. The hackle and calf wing make it a fairly buoyant fly. And the white hair wing also makes it highly visible.

It is certainly an attractor fly that might pass for a variety of caddisflies, stoneflies, and even mayflies. Fish it in sizes #16 – #12 on your favorite Smoky Mountain stream and let me know what you think!

Learn more about Smoky Mountain hatches and flies in my hatch guide.

Flies: Isonychias

Isonychia
Isonychia

The mayfly with the funny name is one worth knowing when it comes to fishing in the late summer and early fall. Actually, all mayflies have funny names, but most, over the years, have become known by some common name such as Light Cahill, Sulfur, March Brown, or Quill Gordon. But the Isonychia still proudly boasts its Latin name. Sure, there are those who might refer to them as Mahogany Duns, Slate Drakes, or even Leadwing Coachman, but none of those names ever stuck.

Isonychia Nymph
Isonychia Nymph

Probably the main reason is that those common names refer more to this insect in its adult stage, but to the trout (and trout fisherman), the nymph is by far the most important stage of this insect’s life. Isonychias, or Iso’s as some call them, don’t behave like most other mayflies when they hatch. Most mayflies will emerge to the surface and hatch in the water near the surface film. After hatching, they are often on the surface for a small amount of time, allowing their wings to dry before they fly off. This leaves most mayfly adults vulnerable to hungry trout and is the stage of the lifecycle that many dry flies represent.

But Iso’s behave more like a stonefly. The nymphs swim to rocks or woody debris and hatch out of the water. The trout never get a shot at the adult until it later returns to lay eggs. Take a closer look at exposed rocks in or around the stream this time of year and you’ll likely see some of their empty shucks.

In the Smokies, they typically hatch from August through October with peak emergence in September. If you want to try your luck imitating them with dry flies, try a dark bodied parachute in size #14-12. The body color will typically be anything from a deep mahogany to dark grey or even black. A good ol’ Parachute Adams is probably as effective as anything. When they return to the water to lay eggs (known as the spinner stage), their body color is more orange or rusty.

George Nymph Fly Pattern
George Nymph

However, as mentioned above, the nymph is what you should be most concerned with. Also in sizes #14-12, the nymph is slender with a dark brown to black body. It has a very distinct white stripe down the back. You will sometimes find specific Isonychia nymph patterns but they are imitated well with common patterns. Prince nymphs or Zug Bugs are a couple of favorites. The late Eddy George was a well-known and highly respected fisherman and fly tyer in this area. He is probably best known for the George Nymph, a fly that I regularly tie and fish in the Smokies. Many people speculate what this fly might represent. With its slender, dark body and white poly-yarn back, it’s incredibly effective during Isonychia time!

Dark soft-hackled wet flies are very productive, too, as Isonychias are active swimmers and tend to be most active in the mornings and evenings. Any time of day is a good time to drop one of the above fly patterns off a dry fly. Early and late in the day, try fishing with one or a pair of these nymphs. Vary your typical dead-drift presentation to offer the occasional twitch or even swing. Check out the Active Nymphing article in this newsletter for more on that presentation.

Learn more about Smoky Mountain hatches and flies in my hatch guide.

Griffith’s Gnat

Griffith's Gnat Fly Pattern
Griffith’s Gnat

Colder months don’t allow for much in the way of dry fly fishing in East Tennessee. When the water temperatures are in the 30’s, it can be tough enough to catch fish on nymphs. But in early March, and during occasional warm stretches in January and February, water temperatures can climb just enough to produce a hatch.

Sometimes in these conditions, particularly on sunny days, bugs may start hatching but fish still opt not to expend the energy to feed on the surface. But there are often isolated areas, mostly slower pools, where they do feed rather methodically on the surface. I just can’t pass an opportunity to catch a fish up top!

There are a variety of insects that are likely to hatch at these times. The most common are black caddis, black stoneflies, black midges, grey midges, and Blue Wing Olive mayflies. There’s not a lot of rhyme or reason to what exactly might be hatching, or which bug the fish might be keying in on. And with the dry fly fishing being so sporadic and unreliable at that time of year, for most, it doesn’t make a lot of sense to buy/tie a bunch of these patterns and carry them on the stream. Most will likely just end up rusting in your box!

Adult Midge
Adult Midge

However, what these insects all have in common is they’re dark in color and small in size. They’re mostly #18 and smaller. The Griffith’s Gnat is a small, dark dry fly generic enough to effectively imitate all of the above insects in most situations. So, rather than carrying four different sizes of six different fly patterns, I tend to carry Griffith’s Gnats in sizes #18 – #22 and am able to fool all but the most selective of trout (and a few of them, too). I once fished a heavy Blue Wing Olive hatch where the fish were actively feeding on the surface. Many were refusing the Blue Wing Olive imitations but eating the Griffith’s Gnat!

It’s just one of those “must-have” flies that I always have in my box, and not just in the winter. It makes for a pretty effective ant imitation during the summer. It’s also a great year round dry fly on tailwaters where midges hatch almost daily. If the fish are feeding on something small and dark, you’ve got more than a fighting chance with this fly.

There are always exceptions, but mostly I fish this fly on a dead drift. I typically use a longer leader and smaller tippet, usually 6X. For a small, dark fly, it’s pretty visible so I often fish it by itself. But in choppier water, in tougher light conditions, or when I just want to give fish options, I will tie it as a dropper off the back of a slightly larger and more visible dry fly. If I tie it 18” off the back of a Parachute Adams, and I see a rise anywhere within 2’ of that Adams, I set the hook.

If you tie your own, it’s a really easy fly to tie. It was always one of the first flies I’d teach when I was teaching beginner fly tying classes. Or if you buy your flies, you can find them almost anywhere. Give it a try!

Learn more about Smoky Mountain hatches and flies in my hatch guide.

Ginger Caddis

Ginger Caddis
Ginger caddis

The Ginger Caddis of the Smokies is known in other circles as the Great Brown Autumn Sedge. Many lump it together with a few other similar species and refer to them all just as October Caddis. No matter what we decide to call it, fish just call it food! Caddis of numerous varieties are available most of the year in the Smokies but really seem to come into their own in fall. And of the many caddis species hatching in the fall, the Ginger Caddis is the undisputed king.

Orange Stimulator Fly Pattern
Orange Stimulator

Ginger Caddis are big, big bugs – in the hook size #10-8 range to be exact. They are in the stream all year, most of the time in a larval encasement of lengthwise sticks. The larvae feed mostly on decaying leaves throughout the winter and spring. In early summer, when that food source has diminished, they seal off their cases and remain inactive until late summer. In late summer, they begin pupation. Emergence, mating, and egg laying occur in early fall. Eggs will hatch in late fall when most of the leaves have fallen, and the larvae will again begin feeding on this foliage. Their entire life cycle is completely synchronized with this food source and they are one of the most important converters of leaf material in the woodland streams of the Eastern United States.

What does that have to do with you? Well, it gives you a good idea of what to tie on the end of your tippet. You will probably only see a handful of these on the stream. The adults tend to fly mostly at night, but there is plenty of spillover near dusk and dawn. And trout don’t seem to care that their not supposed to be seeing them in the middle of the day. They regularly take these imitations with plenty of vigor!

Orange Neversink Caddis Fly Pattern
Neversink Caddis

While there are a number of more exact imitations out there, I have found few flies that work better than an orange Stimulator or an orange Neversink Caddis in sizes #12-8. Even when they’re not hitting the dries, these are both highly buoyant dry flies that do a great job of suspending a dropper. For dropper nymphs, the usual suspects like Pheasant Tails, Princes, and Green Weenies are always good choices. Or you may try a #12 orange soft hackle pattern to imitate the Ginger Caddis pupa.

Actively fishing an orange soft hackle by itself or in tandem with another nymph can be very productive, especially in the early morning. Refer to the Active Nymphingarticle in the Journal section of my web site for tips. Ginger Caddis begin showing up (hatching) in the Smokies in mid to late September and typically hang around until late October.

Learn more about Smoky Mountain hatches and flies in my hatch guide.

Fly Selection Part 2 – Dry Flies vs. Nymphs

Fisherman on Little River Smoky MountainsLast month, I talked about ways to simplify your fly selection and offered tips on how to choose flies based on season and what was hatching. Based on the number of questions I had, however, I left out an important part of the process. Many folks said they are often uncertain when to fish a dry fly vs. a nymph.

As you might imagine, there are a lot of variables. There is not a simple answer like fish nymphs before noon and dries after. The truth is, in places like the Smoky Mountains, when conditions like water temperature and water level are ideal, it often doesn’t matter. There have been plenty of days when I’ve fished with my buddy Brian, going up the stream together and taking turns fishing. He was fishing nymphs or wet flies and I was fishing dries. We caught about the same number of fish. When conditions are right and the trout are actively feeding, they’ll typically feed on both.

So when the conditions are great and you could fish either, how do you decide? Sometimes it just boils down to personal preference. I happen to think fishing with dry flies is more fun. I’m often going to choose a dry fly in those instances. But it also depends where I’m fishing. If it’s purely a rainbow or brook trout stream, I’m highly likely to fish dries. But brown trout are more reluctant to feed on the surface. If there’s a chance of catching a bigger brown, I’m more likely to fish nymphs.

Some people choose to fish dry flies because they think it’s easier. Nymphing requires you to read the water three dimensionally. You have to factor in the depth as well as the surface currents. And there is more stuff, like split shot and sometimes strike indicators, that can lead to more tangles for less experienced anglers. On the other hand, one of the most experienced fly fishermen I know chooses to fish nymphs in smaller, pocket water streams for a similar reason. He says he can cover more water and catch more fish because he’s not spending so much time drying and redressing his dry fly after every fish. It’s a great point. Keeping a dry fly floating in smaller mountain streams, especially when you’re catching a lot of fish, can require a lot of time and effort.

So when the conditions are great and you could fish either, it’s really just going to come down to your personal preference and fishing style. But what about when conditions are not ideal? What are some “less than ideal” conditions that might dictate the use of one fly category over another?

The first one that jumps to mind is water temperature. If you’re fishing early or late in the year when the water temperature is in the 40’s (or colder), there will be fewer insects hatching and the fish are going be more lethargic and less willing to come to the surface to feed. While you can sometimes coax fish to the surface in these conditions, you’ll likely have far greater success fishing nymphs near the bottom where the fish is already seeing most of its natural food and where it doesn’t have to expend as much energy.

High water is another one. When water is high, many of the channels are moving too fast at the surface. In pocket water, the water that normally goes around the rocks is going over them and eliminating the holding pocket. Fish will not only have a tougher time seeing food on the surface, they will have to work too hard to get it. While there can sometimes be fish surface feeding in back eddies, etc. in high water, you’ll likely be far more successful drifting nymphs closer to the bottom.

Low water can be the opposite. Fish don’t quit feeding on nymphs when the water gets too low. But it gets very difficult to fish with nymphs in these conditions because you’re frequently hanging the bottom. Can it be done? Absolutely. But you’ll have a much easier time fishing dry flies in these conditions.

The other situation worth mentioning is fishing for trout in tailwaters. While there are exceptions, most tailwaters are not known for their diversity in aquatic insects. Rather they’ll usually get one good mayfly hatch and/or one good caddis hatch and that’s it. The Clinch River is a perfect example. It gets a great sulfur (mayfly) hatch in May and June and that’s it. During that timeframe, the dry fly fishing can be pretty darn good. The rest of the year their diet mostly consists of midge larvae, scuds, and sulfur nymphs.

Even when tailwater trout can be observed surface feeding on adult midges, you can usually catch fifteen trout below the surface for every one you can catch on top. Tailwaters almost always lend themselves better to nymph fishing.

Finally, if you want to get scientific about the whole thing, it is estimated that anywhere from 65-90% of a trout’s diet comes from below the surface. It makes sense. The typical aquatic insect spends one to four years as a nymph. It only spends one day to two weeks as an adult. So really, we fish dry flies because it’s fun. And sometimes it’s easier. If your primary goal is catching big fish and/or more fish, learn how to fish nymphs.

Learn more about Smoky Mountain hatches and flies in my hatch guide.

Flies: Blue Wing Olive

Blue Wing Olive Mayfly Adult
Blue Wing Olive mayfly

Winter seasons are not typically known to produce large hatches of aquatic insects, particularly in our part of the country. However, if you’re going to run into a hatch worthy of bringing fish to the surface during the cold winter months, it’s likely to be a hatch of Blue Wing Olive mayflies. Blue Wing Olives, or BWO’s as they’re commonly called, are one of the most erratic hatches that I know of. While most aquatic insects hatch at fairly predictable times of the year, BWO’s are likely to come off anytime of the year, typically on the crappiest day imaginable.

Parachute Blue Wing Olive Fly Pattern
Parachute Blue Wing Olive

I can remember guiding someone in the park several years ago in early May, a time when we’re usually seeing good sulphur hatches (and about anything else yellow). We had an unusual and harsh cold front come in where highs were hitting 50-degrees at best. It was cold, windy, and raining and the fish had more or less shut down. We’d had a tough morning to say the least and while shivering through lunch, we were considering calling it in.

I suggested hitting one more nearby pool and to our surprise, it had fish rising in it… a lot of them. Without giving it much thought, I tied a sulfur on his line since that’s what had been hatching… Every. Single. Day. But when he began fishing to them, the sulfur imitation repeatedly drifted through rising trout, untouched. So I switched him to a different, smaller sulphur pattern. Same result. Then, I switched him to a sulphur emerger. Nothing.

Blue Wing Olive Comparadun Fly Pattern
Blue Wing Olive Comparadun

I was making a mistake that a lot of fishermen make. My decisions were based on what the fish had been or should be doing rather than  what they were doing. Eventually, I waded out to the channel in the very back of the pool where I wouldn’t disturb the fish and focused closely on the surface of the water. What I found was not the size #16 sulfurs that had been hatching for the last week. Instead, I saw dozens and dozens of size #20 BWO’s. Fly selection is 45% experience, 45% science, and 10% dumb luck, and I had been relying 100% on experience! We made the appropriate fly change and were into fish for a solid four hours before the hatch ended and the fish went cold again.

Olive Bead Head Pheasant Tail Fly Pattern
Beadhead Olive Pheasant Tail Nymph

There are a lot of morals to this story but the one most relevant to the topic of this article is that BWO’s can hatch anytime. And they usually like to hatch on the foulest of days. With that said, don’t rush out to the Smokies in February because Rob Fightmaster said there would be a great BWO hatch. But if you’re on the water in less that ideal conditions and fish are rising, look for BWO’s. If you don’t see anything but just want to try something on the top, try a #18 or #20 BWO. I ALWAYS have at least a few BWO’s in my fly box in these sizes. I carry different versions but prefer something with a dark olive body and medium dun hackle in a parachute or comparadun style pattern.

Again, a hatch can occur at most anytime but you’re most likely to encounter them between late fall and early spring, at least in this part of the country. And you’re just as likely to see them hatching on a tailwater as you are in the mountains.

Of course, for every fishing eating a BWO on the surface, there are probably five eating a BWO nymph. The nymphs are also usually dark olive in color and can typically be imitated with an olive Pheasant Tail or olive Pheasant Tail nymph. Both are good choices during a hatch or just blind “nymphing” in the winter months.

Learn more about Smoky Mountain hatches and flies in my hatch guide.

Flies: Blue Quills

Adult Blue Quill Mayfly
Blue Quill mayfly

Blue Quills represent one of the first good mayfly hatches of the year in the Smokies. By “good,” I mean they can come off in big enough numbers and with enough consistency for trout to really take notice. Water temperature determines when they hatch. As an early season bug, there can be as much as a three week variation from year to year.

Blue Quill Dry Fly
Blue Quill Dry Fly

They tend to start hatching in the Smokies in late March and continue through the third or fourth week of April. With a warmer than average February, they can get started a little earlier or they may get going a little later in a cold spring.

They hatch sporadically through the day with the heaviest activity occurring between noon and 4:00pm. Water is often higher and faster this time of year.  Pay close attention to soft current edges, eddies, and slow pockets for trout feeding on them. Water temperatures also tend to be chillier this time of year, which can retard emergence. An unweighted nymph fished in the surface film or just below can be very effective, particularly on cooler, damp, or overcast days.

Bead Head Pheasant Tail Nymph
Bead Head Pheasant Tail Nymph

The nymph is a reddish brown color and typically a size #16 or #18. The bugs tend to get smaller as the hatch progresses. So while we’ve mostly been seeing #16’s, expect #18’s to be more common in the coming weeks. There are specific Blue Quill nymph patterns but a standard Pheasant Tail Nymph works as well as anything.

The adults also have a reddish brown body with a light to medium dun wing and are also found in sizes #16 and #18. Again, very specific Blue Quill dry fly patterns are available but a Parachute Adams serves as a worthy imitation.

Learn more about Smoky Mountain hatches and flies in my hatch guide.