Years ago (late 50's & 60's) I used to fly fish for bluegill with a "tiny", can't remember the size no., Colorado spinner with a black gnat fly. It was deadly on big "Bull Gills". I have tried several places trying to find a Colorado spinner like that, but haven't had any luck. I don't even know if they make them any more.
I sure would like to try that combo again as I haven't fly fished in many years. If anyone knows of a place that handles them I sure would appreciate it.