Nightcrawler bunny leech
A pattern I have used in rainy conditions mainly with extremely good success.
Two hooks tied in tandem with braided line with the front bend clipped off. Wrap lead wire around the front hook to weight the fly for a natural sink-rate, then wrap brown or olive crosscut rabbit fur strips from the tail hook up to the eye of the lead hook while adding glue to the bottom of the fur the whole way up. Tie off and let dry.
Works well when casted almost onto shore on a floating line with a long leader and twitched in near fallen trees. The browns can't get enough of it, and the rainbows/cutts love it as well.