I can only catch them early in the spring, my best tactic for redear, and it should be noted that it does not work all the time for me, is to fish in the coves, 6-10 feet of water, seems they like muddy bottoms, and fish a redworm behind a split shot. No bobber, fish it on the bottom, and move it around slowly.
Hook the redworm one time through the middle - don't wad it up on the hook.
I don't claim to be a redear expert, but every once in a while I can stumble across them.