Great question. I asked an instructor the same thing at a racing school last year. I asked when to get my body in position for the next turn. He said, "As soon as the excitement calms down from the last one." Freaking great answer. Watch the MotoGP race tomorrow. They'll show some shots from the "butt cam" Those guys are never sitting square on the seat, unless they are on a LONG straightaway.Here's a question. When you shift your weight, do you do so just prior to your lean-in so that the bike isn't potentially upset while you're in the middle of leaning?