Hey Scott - I figured I'd make a post for you on one of my favorite patterns to tie - I haven't had a chance to fish it yet. Someone gave it to me in a fly swap and I liked it a lot - I tie it slightly different with wire rather than a biot - but it is essentially the same thing.
I tie these in multiple colors - olive, grey, brown, tan, black - might even try red. I mix and match the color of the body and the the color of the antron. For instance I might use an olive body and white antron - or olive body and brown antron.
I assume you would fish it behind a dry as a dropper, or you could fish a couple of these unweighted as nymphs.
Send me your address and I will send you a few to try - my email is firstname.lastname@example.org