I used to chase 'gills and panfish quite a bit and the best fly I ever used was called the Brim Fly
I found one place that actually sells 'em: Flies and Popping Bugs Used For Fiy Fishing for Bream
But they're easy enough to tie up yourself (if you tie flies that is).
Fish it on a floating line with short twitches. I caught 'gills, 'seeds, crappie, rock bass, perch, LM bass, SM bass… all sorts of stuff on this little gray spider.
Here's the pattern;
- Hook: nymph, 2X heavy, 2X long, size 10-12
- Thread: UTC 70 - red
- Tail: white marabou
- Body: gray chenille
- Shellback: brown/black, variegated chenille
- Legs: white rubber