garb,

I spent a bunch of time this last year in the Golden Trout Wilderness (GTW) and caught everything on dries. I used an elk hair caddis, a Henry's Fork caddis, royal coachman, royal wulff, adams, and adams wulff. They all caught fish. Honestly, I think the season is so short for those little guys, they'll pretty much grab anything that's presented. I even had a couple of instances where they came out of the water to grab the fly BEFORE it had even touched the water. Talk about the ultimate dry fly

John