Fishing deep marinas and docks

The lakes I fish have deep marinas. 20+ feet deep. I usually fish them with rigs I can get down deep like drop shots, Texas rigs etc. Can I be successful catching fish higher in the water column? Do you think swim baits or spinnerbaits would work 2 or 3 feet below the surface? I’m just trying to figure out the best way to power fish and whether fish will come up from deep to hit my lures at the surface. I guess this question translates to fishing deep in general. I grew up fishing everything shallow and I’m used to being relatively close to the ground.