Originally Posted by LiquidFeet
What are its uses?
As stated previously--when sufficient femoral rotation hasn't been achieved. Like in heavier powder at lower speeds/lower slope angle. Or on steeper pitches or firmer snow, when the Cm hasn't moved far enough inside the new turn as needed. It seems to me (and perhaps others here would refute this) that it can be a result of a slight lack of fore/aft (and subsequently) lateral commitment to the new turn. Perhaps the skier isn't entirely comfortable with what they are doing and the "hook arm" (as we called it back in the day at the 'Bowl in Missoula) is the unconscious result of this. After all, moving the arm (or hand) in or out--assuming the entire arm carriage hasn't moved as well--does slightly alter the positioning of the Cm when the turn(s) being made are considered in their entirety.
H.A. gives us that little bit extra when it's needed, though I think it's by and large an unconscious thing. To this day we still see racers with this positioning from time to time...especially if they are low and late and need to make an adjustment. I personally don't think it's something that needs to be taught, but rather minimized, to ensure that it doesn't evolve in to a crutch. As Jasp said above:
Originally Posted by justanotherskipro
"It is IMO a minor error that he probably did as a junior and never saw a need to change."
I would like to be clear that I don't think the error is egregious nor is it necessarily indicative of "bad skiing", or anything like that, I just personally wouldn't want to see it present at all times, as it may be symptomatic of other underlying issues (be they physical or mental). I felt myself using H.A. (is there an official term for it?? IDK...) last season in some cement-like heavy "pow". I was on a medium pitched slope and my skis were running slow for the first several turns until I got up to speed...at which time I was easily able to "ditch it."
I am curious as to others thoughts here (Jasp, Jamt, 4ster, BTS, etc...) to read their views. Perhaps I'm off the mark here, but in summation I feel that ultimately such movements impart a slight rotary force to the Bos and it is probably MORE noticeable/prevalent when performing one-legged skiing drills of the type being discussed/seen here as these are when accurate fore/aft/lateral movements of the Cm are crucial...
Edited by zentune - 8/12/13 at 10:22pm