My favorite is "Robb's little wiggler". I wanted something to imitate an inch worm or red worm. I tie this on a curved shank 3X hook like the TMC 200R, add a contrasting bead head, (I like red with chatruese) Sparse marabou tail, cover the hook shank with thread, over wrap with clear V-rib.This fly is very neutral buoyant if you use a glass seed bead for the head , if more depth is desired use brass or tungsten.