Depending on conditions and where they are staging, I use everything from 1/32 to 1/4. Lately the bite has been deep and I use 10/2 braid and 1/4oz brush guard jigs and plastics to fish the edges of river channels and the junk that litters the bottom there. Some of my friends use 1/32 plastics to shoot under shady boathouses in deep water and also do very well. Using only one size or style of might produce some but you can up your game by putting it in front of their nose with a little different presentation.
Creativity is just intelligence fooling around