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My my, lots of posturing going on here.
Seems like certain people paint themselves into a corner when they speak in absolutes. I can understand why PMTSers like to get on their shovels a lot, though that is not the only way to ski well. It can certainly help a shaped ski to bend just a little more and "carve" a tighter, slower turn, which is a huge part of how PMTS skiers achieve their sense of control instead of deliberately skidding the tails, etc...
Fine. Its not the only way.
Furthermore, I think the kind of shovel loading I hear being advocated is not very relevant in the top 1/3 of the turn.
Bob and others have tried to describe in great detail how a skier's mass can transition from aft to fore simply by taking a shorter path to the fall line then the skis do. The CoM takes a short cut. If you are extremely aft during float, then yes, some proactive effort may be required to get you out of aft, in addition to the short cut taking you there. Or maybe its not necessary. Its not absolute.
Some kinds of releases and transitions can keep a skier from being overly aft during float and no such compensation is needed. Rick showed us a few. As it turns out, I have limited dorsi-flexion which can sometimes have the effect of making it difficult to keep my inside foot tucked underneath me, causing me to be just a bit more aft at transition then I would really prefer to be. The end result for me is that I do in fact just a little tiny nudge forward of my hip/pelvis as I cross over, to compensate. However, my goal is by no means to "load" the tip of the ski at that point, its merely to feel centered and allow my fore stance to develop as I approach the fallline and my CoM short cuts there. What happens after that depends entirely on the situation at hand, not every ski situation calls for hips way forward at the fallline, but certainly that is my preference for high speed carving on groomers, though I am not really doing it with the intention of loading the ski tips. I am usually trying to ski faster...not slower.

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