Have you tried fishing below a dam with live bait and casting spoons? You can catch lots of big fish in the spillway below a dam. Today I am using shiners aka live minnows as fishing bait. I caught multiple fish including some big catfish and some really nice hybrid striped bass also known as wiper. While just casting and retrieving I also caught a hybrid on a spoon. We even had three fish on at the same time at one point which was so much fun!
I would probably suggest live bait like minnows and spoons if you want to try fishing below a dam. Check it out in the video below!