there are some small plastics that immitate mad toms (river catfish) and they work well. I used to fish them primarily on small jig heads in the rivers I used to fish for smallies, but last year I started dropshotting them on a short leader (6 to 8 inches)out on the Delta and catching fish. I wish somone would make them larger than the 3 and 5 inch models they come in, I know they would work.

http://www.madtoms.com/baits.htm