I fished lake St. Clair a couple of years ago. My buddy and I spent about 8 Hours fishing the banks in 3 ro 6 feet of water. We stuck a bunch of largemouth and missed a couple smallies. We caught them on everything from jigs, plastics, cranks, and topwater. We finally stopped another bass boat and asked him what the secret was to catching smallies. He said to get of the bank and go about 1 or 2 miles out until you get to 9 or 12 ft or water and try there. We didn't have clue the lake was so shallow all over except the channel. We found a rocky bottom in about 11ft of water and started whacking smallies left and right on tubes and grubs. We didn't fish the channal much because we didn't want to go on the canadian side since we didn't have a fishing licsense and my friends up there said they are always checking people so we stayed away from it. But that would be the first place I would go in mid summer. Supposedly there are a coulple of spots on the channel that have lots of junk rock and stuff (on the canadian side) probably pretty good. Try Perch colored baits. Last day there we went perch fishing with a local and hooked a bunch of those and few big smallies that broke our light line. I assume they were feeding on the perch.