I can tell you which flies im taking but as to where, there are 2 areas. Upper & Lower, Upper (sumallo grove) & Lower (26 Mile Bridge to the lake) Im going for my first trip there this weekend and im taking these flies in various sizes.(12-16 for most flies, streamers of course are bigger)
Dries: Adams, Lt. Cahill, Green Drakes, Elk hair caddis, Elk hair emerger, and i have parachutes of the first 3 tied up also.
Wets/Nymphs: Hare's ear (green and brown){with and without legs}, Prince Nymphs, Stones and some streamers (these are for the Bulls)
this is a good start i was told so this is what im taking my first time out. if i see other things hatching while im there i will jar one bug so i can imitate it later for next time ;D
hope that helps
HOOK