We used to get a lot of decent sized cats in chippewa bay... It seemed like they would move out of the deeper water during the last couple hours of the day.. When they showed it wasn't one or 2, they seemed to come in schools.
Made for some really good catching...
There was also a spot we used to fish near Alexandria Bay. There was specific channel marker (I want to say it was #183, but it has been a while). it was deep water, 60 to 80 feet, but we used to get some really nice smallmouth and perch there... Ever once in a while we would get a BIG cat.. Never kept them or officially weighed them, but they were big and a great fight.