I was watching a fishing show a few years back, I came in on it in the middle of the show so I did not hear what lake the guy was fishing, but basically he was using shrimp, no weight, and casting them up against the bluffs and letting it slowly sink, he was catching cat after cat. It was during the daytime in the spring, maybe they were spawning. Never have tried them myself, but it's on my list of things to do.