I caught these walleye this afternoon up there. I've heard divers talk about these monster cats, but I've never caught one or heard of anyone else doing so. You can catch a ton of catfish though. There's no state imposed limit on catfish there. I have since been told that my wiper isn't that big, and they catch them that size quite often. Sorry for derailing your thread.
I have some buddies who scuba dive there - I'll ask them about the big cats.