In the Smokies, we are mainly fishing faster, choppier water and often choose bushier, more heavily hackled dry fly patterns that float well. In that kind of water, trout don’t get much time to study the fly and their view tends to be distorted by those choppy currents, so the bushier flies tend to do the trick. Even when fishing pools in the Smokies, you usually have a defined feeding channel that will have at least a little chop to it. In those situations, a parachute style fly pattern is usally adequate to provide a slightly more realistic profile.
But in flatter water like you commonly see on tailwaters like the Clinch, particularly weeks into a heavy hatch, an even more realistic profile is necessary. Trout routinely refuse parachute style flies and probably wouldn’t even consider a vertically hackled Catskill style dry fly.
This problem isn’t new to fly fishers. In the 1930’s, Fran Betters developed the Haystack to fool trout in slow moving spring creeks. It consisted of a deer hair wing and tail and no hackle, allowing for a lower riding fly with a much more realistic profile. Al Caucci and Ed Natasi introduced the Comparadun, a variation of the Haystack, in their 1972 book, Comparahatch. The pattern is essentially the same but they were able to use more modern microfibbets to create a longer, slimmer, more durable split tail that aided in floatation.
In the mid 1980’s, Craig Matthews and John Juracek took the Comparadun a step further and replaced the split microfibbet tails with a piece of antron or zelon. It essentially turned the fly into an emerger, with the antron or zelon “tail” suggesting the trailing shuck of an emerging mayfly. Of course, in any of the patterns described above, the body, wing, and tail/shuck colors can be altered to imitate different insects.
I routinely fish the split tail and the trailing shuck versions, usually during a sulphur or BWO hatch. And again, I am usually fishing them on the Clinch or possibly in a slow pool in the mountains. They just don’t float well enough to fish them in faster riffles and pocket water. But on a slow glide on the Clinch, they can be deadly!
Sulphur Comparadun
Hook: TMC 100 (or equivalent) #16-18
Thread: 8/0 pale yellow
Tail: Light dun microfibbets ( or replace microfibbets with small tuft of brown antron for trailing shuck version)
Body: Pale yellow dry fly dubbing
Wing: Coasatal deer hair
So, I’m writing about March Browns not because they are necessarily of great significance to the Smoky Mountain fly fisherman, but mainly because they’re just really cool bugs! Like many aquatic insects in the Smokies, this mayfly does not usually hatch abundantly enough to really get the trout keyed in on them, but it is worth keeping a few in your fly box. In other words, you probably don’t need fifteen different March Brown patterns in subtly different colors. Having a few of a basic pattern should do the trick.
Probably 20 years ago, I was fishing the Clinch River with a buddy during the sulfur hatch. I won’t get into what has happened to that hatch, but back then, it was epic. Sulfurs would come off by the thousands for 4-6 hours a day for about 3 months. We would drive down from Kentucky to fish it and on most trips, we would both steadily catch fish, many topping 20”.
If fish are actively rising but you don’t see any bugs in the air, check the water. Try to position yourself at the bottom of a feeding lane (downstream of where the fish are feeding) and watch the surface of the water (and just beneath) for drifting bugs. Holding a fine mesh net in the current is a great way to collect what’s coming down the channel, but if you don’t have one, your eyeballs will do just fine. If you see some insects, capture one and try to match it with a fly pattern.
If you take East Tennessee as a whole, it’s pretty safe to say one of the most prolific hatches is the sulphur mayfly hatch. Southern tailwaters are generally not known for having significant hatches of mayflies, caddisflies, or stoneflies. When we think of most of these dam-controlled rivers, we typically think of crustaceans like scuds and sow bugs, and midges…. lots and lots of midges. However, one mayfly that hatches on all East Tennessee tailwaters, often in very big numbers, is the sulphur. And that means that your best opportunity to catch a really big fish on a dry fly around these parts is during the sulphur hatch.
When many people think of fishing with flies, images of more familiar insects such as houseflies and mosquitoes are typically conjured. While some of these familiar terrestrial insects like ants, beetles, and hoppers are a source of food for trout, especially in the summer, it is aquatic insects that are most abundant to fish throughout the year and what most artificial flies are intended to resemble.
Quill Gordons are fairly large mayflies, between a #14-10 hook size, that begin to hatch when the water temperature reaches 50-degrees for a significant part of the day, for a few days in a row. In unusually warm years, they’ve hatched as early as mid February. In particularly cool years, they may not hatch until April. But most years on the lower elevation streams in the Smokies, this occurs about the third week of March.
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.
