I was down at the local river yesterday and I watched as a young teenager caught bass after bass on a small nymph. I asked to see the fly, and this is the best description I can offer:

Hook: #12
Thread: brown or white (I can't remember)
Tail: brown hackle tip
Body: white (maybe off-white) chenille
Hackle: brown saddle hackle (wrapped the length of the body)
Shellback: appeared to be a strip of clear plastic shopping bag.

Does this recipe sound familiar? If so, what was he immitating? He must have caught almost a dozen fish in an hour!

Thanks