Using polarized glasses you can actually see the fish on the beds. A soft plastic bait, such as a Berkley power tube can be pitched to the spawning bed. Once it settles to the bottom a gentle twitching action will generally trigger a response. Some of the larger fish can be quite vulnerable at this time. Once they have finished spawning the majority of the these fish will migrate to underwater humps, secondary and main lake points.
Smallmouth bass tend to be home bodies.
Once they take up residence many of them will tend to relate to the same piece of structure for the entire summer, as long as it provides adequate forage. Humps or points with a lot of broken rock or some other form of cover will tend to hold more and larger fish. Take the time to explore, using your electronics. Find the humps and points that don't attract every passing angler. Once you locate the fish you can catch them using several techniques.