optimally. Anyone who can't admit that is an idiot. Now, knowing you can't play them both optimally you're left with the risk/reward: Risk: you play one or both poorly and the opponent takes advantage Reward: you confuse the opponent sufficiently that they can't take advantage. Guess what? Well coached teams don't get confused enough to make the non optimality worthwhile. Sure, the crappy 6th grade team coached by uncle Joe gets confused and can't score. And, hell, some Div 1 college teams aren't well-coached. So they can't score consistently. But any decent team already knows how to attack 2-3, 1-2-2 and 1-3-1 zones *before the season starts.* They aren't going to be somehow stymied or befuddled by more than a single shot clock once they see you switch. Only chumps will. And we can already beat most of the chumps. You can't name a coach who's won a NC in the last 25 years who consistently switches from man to zone, can you?