Watching a big trout slowly rise to the surface and take a dry fly is one of the most surreal moments in fly fishing. It’s a moment many fly anglers dream about at night and spend their entire fishing season chasing. But it’s also a rare moment that few anglers today believe is possible.
In a changing fly-fishing industry and community, the messaging tells anglers that streamers are the best way to target large trout. As a result, you see more sinking lines and articulated streamers than ever before. Now this is true in every which way, streamers are a great way to target the biggest fish in the river. But I personally believe it is not the only way, and there are ample opportunities to catch quality fish on dry flies for those with the patience and skills to develop.
Now, before I get too far, I understand that fly fishing goes far beyond just catching big trout, and that all techniques in fly fishing are equal. We appreciate all sizes of trout and the greater experience that fly fishing brings here on The Curious Angler. But I get just as excited as the next guy when I see a big trout rising, and I love the challenges that come with dry fly fishing.
So, here I share a formula for what it takes to catch a big trout on a dry fly. I have spent a lot of my young fishing journey targeting trout on dry flies, and while I still have much more to experience, I like to think I have learned something along the way. I hope this article inspires you to take on the challenge and target quality trout on dry flies.
Abundant Hatches
The most important factor in catching big trout on dry flies is the bugs. Hatches play a pivotal role in bringing big fish to the surface. Your best opportunities at the largest fish in the river will occur during the thickest, most abundant, and protein-filled hatches.
They say that the biggest trout in a river stops eating bugs and switches to larger prey such as minnows, sculpin, and crayfish. While I believe this is true, I also believe they are still trout and inclined to eat insects, no matter how big they grow. While they may not eat the odd mayfly nymph that goes by, I have found that big trout will take advantage of the nutrients available during thick hatches.
What hatches bring big fish to the surface? While any thick hatch will bring large fish to the surface, a few hatches are known as the best to catch a big trout on a dry fly. The hatches that typically bring the biggest fish to the surface are the drakes (brown, green, and grey), pale morning duns, stoneflies (salmonfly, golden, skwala, and nocturnal), and terrestrials. These hatches are among the most consistent at bringing quality fish to the surface and can be found on many rivers throughout the Yellowstone Region. Caddis, baetis, midges, and other mayfly hatches are well worth chasing as well, as an intense hatch of these insects can also bring quality trout to the surface.
To catch quality trout on dry flies, I recommend changing your mindset on planning fishing trips. Rather than choosing specific fisheries and planning a trip, try planning your trips around specific insect hatches. Chase the green drake hatch around the region, or plan to be at a tailwater during its PMD season. Whatever the hatch you’re chasing, this mindset shift drastically increases your chances of finding quality trout on dry flies throughout the fishing season. It’s at least worked for me once or twice.
Patience and Approach
Unless you’re prospecting big stoneflies and hoppers, I find the best way to catch big trout on dry flies is to take your time and watch the water. Let the river tell you what to do, as Craig Mathews says.
Many days, it takes time for the hatch to develop and the trout to start feeding on the insects. Waiting for the hatch to commence takes patience, but it is much better than walking through all the water the fish will move into when the hatch comes off. I see this too often by anglers who are unaware of an impending hatch.
Once the hatch comes off and you’re lucky enough to have many fish rising, take your time and examine the rise forms. Questions I ask myself include: What bugs are on the water, and which ones will the big trout be eating? Where would a big fish comfortably rise? Am I in the best position to make an accurate cast and land the fish?
Rather than casting away and trying to catch every rising fish in the river, take your time and look for the biggest fish. It takes a special eye to identify the biggest trout rising during a hatch. In general, the subtle rises tend to be the bigger fish. Look for the prominent snout of a trout or the distance between the head and the tail of the fish when they rise. You may have to walk by some rising fish in a day hunting for the big one, but it is usually worth the sacrifice.
Taking your time and planning your approach is what the best of trout hunters pride themselves on. So many anglers nowadays go too fast on the river, casting away without observing what is going on right in front of them. I find that patience consistently serves me on the river, especially when hunting big trout with dry flies.
Where To Find Big Fish Rising
While it can be somewhat random and vary from river to river, there are some things to look for when targeting quality trout on dry flies.
Similar to streamer fishing, big fish tend to rise near structure. Whether it be log jams, weed mats, boulder gardens, undercut banks, or overhanging willows. It doesn’t matter how tight to the structure or shallow the water is, big fish feel safe rising in these areas. There are also often many bugs that float and congregate near the structure.
Another place to look for big fish is at the edges of long, deep runs. Thick hatches tend to bring the big fish out of the depths and into the shallower water near the banks. I especially like targeting the tail end of these runs. The water usually slows as the run widens, and bugs are pushed into these areas from the riffle of the run.
Other places to find quality trout rising are swirling foam eddies. These places provide cover and congregate food into one place. It’s usually worth stopping to watch these eddies, as you’ll often see rising fish. While all these areas are reliable, big fish can be found rising throughout a river. With time on the water and practice, you will learn where to look at different times of year.
Accurate Dry Fly Casts
Everything I have talked about so far does not matter if you can not accurately cast and get a natural drift with a dry fly. Dry fly fishing is a caster’s game, and the cast is what separates the best from the rest. The biggest fish in the river are often the wariest, so they require the best presentation possible. Big trout are also found rising in difficult spots, close to structure or in conflicting currents. Being able to put the fly where you want it while allowing enough slack for a natural drift is paramount, and doing it on the first cast makes a world of difference.
Beyond distance and accuracy, dry fly fishing requires skill in casting for a natural drift. Casts such as the reach cast, pile cast, and parachute cast deliver enough slack in the line to naturally present a dry fly without a whole lot of mending. Dry fly casts take a lot of practice, but are often key to fooling the biggest fish in the river. While I am no expert caster by any means, implementing a variety of casting techniques in my dry fly fishing has dramatically increased my success on the water. I recommend learning some advanced dry-fly casts if you want to target quality trout on dry flies.
It's All About The Eat
At the end of the day, dry fly fishing is rarely the most effective way to target big fish in the Yellowstone Region. There is so much that has to go right to find big fish eating on the surface. But on those rare days when it all comes together, the pursuit is well worth it.
Watching a large brown trout’s snout break the surface and eat an insect is exhilarating. It gets the heart pumping and knees shaking. So much time spent on the water chasing this moment.
As each of us has experienced, getting a big fish to eat your fly is only half the battle. Landing it on often lighter tippets and small hooks is not a guarantee. But whether the trout makes it to the net or not, you will always remember the eat, and know that catching big fish on dry flies is more than possible.
Thanks for reading The Curious Angler. I love targeting fish on dry flies, and have so much to say on this topic. If you ever have questions or just want to talk fishing, I’d love to hear from you.
Stay Curious,
Nick
2 thoughts on “Unlocking Big Trout On Dry Flies”
Nick, great article! You were always a good writer but have improved so much in a short time. I enjoy reading your stuff. Gregg
Thank you Gregg! That means a lot. I have enjoyed writing and challenging myself over the years and hope for many more. You have been reading from the start, and I greatly appreciate your support over the years. Wish you the best this summer in your fishing.