No question. Here are the top crappies flies that I have used:

1. Crappie Candy
2. Green over White Clouser Minnow (Fire Tiger Clousers work good, too...)
3. Chartruese Woolly Bugger
4. Any Green over White streamer
5. Black-Nosed Dace
6. Small Puglisi-Style Shad
7. Small Polar Minnow in Gray and White.