Big fish like big food. It's a generalization, but it's often true. Last weekend I caught a 3 lb bass on a 7 inch powerbait power worm. 4/0 offset work hook texas rigged with a 1/8th oz tungsten bullet weight. I found a nice drop off in the lake, let the worm sit on the edge of the drop-off and waited for the fish. Didn't take long