Danmully,
I agree that 8 man rotations are the way to go - especially if if you're playing in a tournament or a big game. Schroyer has pretty much gone with a 10-11 man rotation the entire season so unfortunately 8 just isn't going to happen. So I went with the players that have gotten PT consistently this season.
I've been in sim basketball leagues and my teams have always done best when using a 7-8 man rotation.
Schroyer needs to do a better job with his subs - don't put a player in for two minutes and sit him on the bench for 20. If you're going to put someone in the game - keep them in so they can develop a rhythm and feel for the game.