I lived outside Detroit right after college. Played pickup ball at what was called Oakland Community College (I think it's Oakland University now). Lots of Pistons used to show up there. Rick Mahorn, Dennis Rodman, Laimbeer a few times, Vinnie Johnson, Joe Dumars, etc. But Isiah Thomas was never there when I was.
The big guys basically always stayed outside and took jump shots. They didn't want to get inside and battle anyone so they could avoid injuries. Occasionally they played against each other and then they would go at it a little more.
FYI...Dennis Rodman when he was there was very personable and liked to talk trash, but he was nothing like what he became later on.