Originally Posted by Bob Barnes
Yes, and apparently also with
Woosler--you must be very, very short!
And while you seem to believe that you are superior to everyone else out there, you are demonstrably wrong about a few other things as well. Normally, I wouldn't really care, but when someone comes into the forums here with an attitude like yours, even a few little "wrongs" can let all the air out of your puffed-up balloon pretty quickly.
For example, zeppa angle is indeed a critical adjustment in boot setup, as you suggest. Primarily, it affects the angle of the ankle, as raising the heel effectively "opens" the ankle--particularly useful for those who, like you, suffer from limited range of dorsiflexion. But yours is a critical, albeit common, misunderstanding to suggest that zeppa angle directly moves your balance--or even your hips--fore and aft. You state that "Every degree rise [of the heel] 'swings/arcs' hips around 1 degree forward." No, it simply makes you taller--while "opening" (reducing the degree of dorsiflexion of) the ankle. That's why all those Rockettes you mentioned don't just fall over in those high heels! What you suggest would be true if, and only if, all of the fore-aft joints from the ankle up were fused like a marble statue, so that tipping your foot forward would in fact move your hips and everything else forward. But raising the zeppa heel does not necessarily even affect your shin angle, much less the angles of the knees and other joints above. Indeed, even increasing the "delta" angle, by raising the heel of the entire boot, would not necessarily cause the effect you describe. It would increase the forward angle of your shins, moving your knees forward. But your hips would not have to move forward as well--all you have to do is bend your knees a little more and perhaps extend your hips and spine (more upright) a little more, returning your balance point to center. And this is, in fact, what usually happens when someone has too much forward lean in their boots--whether due to too much cuff angle, too much delta angle, very large calves, or any other reason--they adopt a classic representative stance of upright spine, highly flexed knees, and aggressive forward shin angle.
Other factual errors include your suggestion that Aspen initiated the requirement of a Nastar qualification for instructor certification. As has been pointed out, that is a requirement of PSIA-RM, and Aspen instructors, like all others in the Rocky Mountain Division, must comply.
Furthermore, Aspen has plenty of instructors who excel in bumps--some competitively--as well as tai chi, racing, park and pipe, powder, extreme skiing, and every other aspect of the sport. Not all do, of course, and you certainly cannot ascertain an instructor's skiing or athletic ability by watching him or her teach beginner and intermediate skiers--the staples of most instructors' existence.
In any case, these topics have been thoroughly discussed here in the past, particularly in the bootfitters' forum, where you'll find some of the industry's top experts. It is not my intent to argue them further here. I merely want to demonstrate to you that, um, your slip is showing. Please knock off the puffery and come down to earth, where you may well have something worthwhile to contribute.