Well, for my offense (as Iīm the OC, I can say my offense) I use 20 plays, most flippable. Nearly every one played from 8 different formations, so we have about 300 combinations my players have to memorize. As they all play for fun and have to work a "real" job to survive, they donīt have that much time. Still they can do it. Why? Cause itīs built logically. Yeah, I rock.