The really great thing about slalom is: There are many different means to approach the same end. Marcus, JB, Rossi, Andy, Parrish, TW all look somewhat different when they ski, but they all move their mass similiarly. You don't have to twist and contort to move your mass and ride the ski in the proper fashion, Marcus has perfected his technique to the degree that many can't match. This doesn't mean the theorys he or some of the other skiers use won't work to reach the same end.