Rainy's Hibernator Streamer
The magic here is in the volume of the body. It puffs, moves, undulates, and simply gets bit. As you can see in the photos there is some "puff factor" on this fly. It slims down under tension, and the PUFF it doubles its volume with every twitch or ripple.
It is not a heavy fly, so we encourage you to use a sink tip or sinking line with this fly. It is very effective as a swinging pattern in current, especially on a trout spey style rod. The other nice thing about it being light is that you won't snag bottom very much!