You can respectfully disagree with what I said but everyone else has pretty much said the same things. "You can spot the need for alignments on the slope but in the absence of an off snow alignment you cannot suggest any specific corrections". I stand by that statement but I missunderstood the tone of your original post. I guess I read it as "should instructors be doing this out on the hill?" The answer to that is no, a good instructor will send his student for a thorough off snow alignment evaluation. In re-reading the original post that clearly was not your intention. You question was "who does this?" not "should this be done by instuctors?" That said let's go to something that you said.
|Once on the slope I would look for an instructor/alignment specialist to fine tune ramp angle, cuff angle, lateral canting, and maybe even binding position (if possible with Tyrolia, Atomic, or demo bindings).
Now that the tone is understood I am assuming that our customer has had a competent off slope evaluation with all corrections made. Our customer is no doubt very technical and wants absolute perfection. There are really only two questions on snow to answer.
Question one, was the off snow alignment done properly? and the only way to really determine this is to check everything off snow again. If its the evaluator's alignment, he should know if its correct. If the customer says yes, he is comfortable with the off snow alignment process, then proceed to question number two.
The second question is fine tuning the under binding cant situation.
It is very difficult in an off snow evaluation to get the true under binding cant determined to better than about 1 degree, that is, measuring accurately the flatness of the ski. The problem with measuring flatness accurately is that people wiggle and upset high resolution protractors making them near impossible to read or the resolution of a readable protractor is no better than about +/- 1/2 degree. The second problem is that the off snow evaluation is static and in the real world skiers have some degree of slop in the hips, knees and boot liners. On snow cant evaluations try to get a good compromise considering all the dynamic factors at work that are not present in the off snow alignment process.
I guess I should also say that in most situations, the off snow alignment specialist should be able to build the footbeds good enough to get the customer within 1 degree of cant in 9 out of 10 situations.
Now back to the on snow evaluation. In order to correct for very fine adjustments in cant, you need a customer would is at a fairly advanced level in skiing and can perform some things like, one footed skiing. Lower level skiers are not capable of Skiing maneuvers that readily show the need for fine tuned cants. This same customer must be very good at the touchy feely stuff in their own skiing. Most skiers couldn't tell you if something felt worse or better in the less than a 1 degree cant situation. A racer or someone with very good technique can tell you this difference but no Joe Blow. The evaluator, as Roger says, must be knowledgeable enough to ask the right questions, evaluate the customer's skiing and carry some partial cant pieces to put between the boot sole and the binding. The customer must understand that while the cant pieces are under their boots, in their bindings, the saftey of the binding may be compromised. I let the customer put the cant pieces under the boot themselves. With a few hours of fiddling on some good corduroy, a good evaluator can fine tune things pretty well.[ December 06, 2002, 04:56 PM: Message edited by: Pierre ]