I really like a foam and deer-hair extended body design for Drakes and Hex patterns. Given that these bugs give such a large "picture" to the trout, I think that the realism they convey often pays off. For the Hex hatches in New England, I tie a Hairwing Dun-style pattern with a white foam body. I then color it to match with a prismacolor marker (yellow ochre), then wipe it gently to allow for a darker color in the creases. Trout seem to like them I have attached a picture that is also posted on this forum.