I guess I think of Andy as one of the stronger players because he seems to ALWAYS be around when there is strategizing going on. He has his nose in everybody's business.
I actually find him incredibly annoying to watch because he just is so gossipy about everything and everybody, but he seems to have a feel for what's going on in the house.
I consider him more of a "hanger on" type than a floater, if there's a difference. Whichever, I don't think he will win, but he will probably go pretty far, just because he manages to allign himself with the stronger players and they know they can use him.
As I was typing that, I think I just convinced myself that he's a floater.