We will be adding flies to this page often, so check back soon.

We all have our favorite flies, so I would encourage you to bring your fly boxes. I would also advise you to keep an open mind and be ready to buy some flies when you get to Montana, preferably in the company of your guide. We are on the Yellowstone and other local waters every day and we talk to other guides and fishermen. So, we keep a running tab on what flies are hot, right now.
The hatches and conditions change, often on a daily basis. So, even if you read online right before you leave for your big trip that such and such fly has been hammering fish just be willing to listen to your guide's advice. Believe me, we love it when you catch fish. Our secret is that we are having as much fun as our fishermen. Very often we reach into our own fly boxes to ensure that our guests will be using the right flies.

The flies we use on the Yellowstone and other western rivers are very often different from flies that are popular say back in the northeast. For example, when fishing from a boat one of the most important criteria for a dry fly is how well and how long it will float. This is why there are so many big dries made out of foam out here. You may also be surprised at how many flies are tied with rubber legs.
A major difference in the flies we use here is that many of the patterns tend to be more attractor than imitative. A few examples are the very simple, and deadly, rubber leg stone fly nymphs versus the much more imitative stone fly nymphs that are so popular in the east. Humpies and Royal Wulffs are very popular dry flies as are the Chernobyl Ants. I have actually had a few east coast fishermen think that I was playing a trick on them when I tied on a Chernobyl Ant  for them. They were soon convinced that I was very serious!
Big flies: Be ready to use some flies that are much larger than you have ever used for trout before. I am primarily talking about streamers, especially wooly buggers. A size two Wooly Bugger  or streamer may be much larger than you have used before, but believe me, they are not too big, not by a long shot. Four or five, even six inch streamers are not too big. Remember, big browns like to eat smaller fish. Big browns are predators. Do the math.

The bottom line is to keep an open mind when it comes to fly selection. Your time on the water anywhere is valuable. Time on the water on a dream trip is even more valuable. In a drift boat  you will not get a second chance at that great stretch of river, so trust your guide and take his advice.