Originally Posted by ssh
I am a PSIA certified instructor. When teaching mid-level skiers, I focus primarily on eliminating rotary movement of the skis on the snow (including skidding) and helping them get comfortable with the sensations of purely carved turns. It is often difficult for them to get comfortable with it.
I do not use rotary movements of the skis in my skiing instruction except for specific tactical reasons (most notably in some bumps). I do talk about rotation of the femurs, but that's a different use of "rotary".
This is exactly what I was talking about when I referenced that, particular with intermediates, I have found very little substantial difference between knowledgeable epic instructors and the PMTS teachings.
Everyone seems to agree that getting skiers balanced on the outside foot, actively rolling the feet with ankle motion and promoting strong inside foot tipping, replacing rotary turn initiation with edging, replacing the up-motion of the cross-over with flexion and cross-under through transition, and getting the upper and lower body seperated through anticipated stance and angulation will provide skiers with the necessary movements to break out of the terminal intermediate rut and start down the road to high level skiing.
Harald Harb claims this stuff isn't in the PSIA. I disagree with him here because I have seen these discussion on Epic. What I see on Epic is more disagreements about some of the topics and discussion on them. On realskiers, most of the skiers are either convinced PMTS is correct through their exploration of the material, simply taking it on faith, or not informed enough to offer a constructive dissagreement. With the PSIA as an organization being so large and diverse, I could see the potential for instructors to not all be on the same page, but that doesn't mean its not in there somewhere (which is why the strength of the instructor is so much more important than the system.)
Where I see differences creeping is in the pre and post intermediate stages with the obvious difference of wedge and steering/guiding for beginners. On the higher levels we get to ssh's mention of femur rotation to enhance carving, where PMTS does differ substantially. Here we see the difference of PMTS calling for tipping of the inside foot to recruit the muscles in the leg to rotate the femur, there is no focus on the fermur rotation itself as it is a result of the tipping of the foot.
A question about the use of femur roation to enhance a carve. If the femur rotation is producing a torque on the ski, in this case in the plane of the ski so it would be pushing increasing pressure at the tip of the ski, doesn't it also have to be reducing pressure at the tail of the ski? If the goal is to shorten the carved turn, why not use more edge angle instead? Can more tip pressure be achieved through flexing the ankles further?
p.s. I know ssh is probably savvy, but the Weems reference is definitely tounge-in-cheek. I really enjoyed his e-book and would like very much to ski with him. Seems like he would have a million stories to tell.