One of my favorite creek flies for trout is the CDC & Elk. This is one of my most productive variations on Hans Weilenmann's infamous original. I tie the fly with yellow, olive and dun CDC feathers using the type 4 feather (check out this excellent CDC article for feather types http://globalflyfisher.com/tie-better/tying-with-cdc). I change up the wing between dark or light hair and often carry both in the box, using the wing as an indicator on a dropper set-up. The contrasting wing color makes the fly easy to spot on the water.
For the olive color, the golden brown ice dubbing is a nice compliment. I like to just add enough for an accent and not to overdo it.
CDC & Elk variant (Hans Weilenmann)
Hook: Firehole 315 #12-18
Thread: Olive 8/0 (70d)
Body: CDC type 1 or 4
Accent: Ice Dubbing (Golden Brown)
Wing: Elk or deer hair
