Good mess of fish you have there. I'll pass on a trick since you are fishing an area that I like to fish as well.
Keep a rod rigged for bass with a bluegill colored swim jig. My favorite is the KVD swim jig or if you wanted buy the skirt's and put the bluegill color on your own jigs you have. Add a single or double tail chartreuse trailer (gills have a hint of that color naturally on their tail) and steady crank that around where you're catching the gills late or early in the day.
I have caught some big bass doing that when the bluegill first move up and at night after they are spawning/post spawn. They'll eat the jig so deep that the jig will vanish once his mouth is closed.
