@wish Taller skiers tend to stay taller because it’s more difficult for them to recover from broken/misaligned body positions. Shorter skiers tend to be able to get away with more as far as getting out of position, but then being able to recover more quickly. I did not intend to say that shorter skiers should squat more.
I usually do not focus my coaching on the amount of knee bend. What I tell people to focus on is where the kneecap of the front leg lines up over their front foot. If the kneecap is behind the heel at certain points in the course then the skier’s weight is going to be placing more pressure over the tail of the ski. During an attempt to accelerate this is going to be a problem. The ski will not respond as well as it could and the space between the hips and the handle is going to be increased so the skier’s ability to leverage is going to be diminished. Two things that are important in skiing is that the skier’s weight is balanced over the center of the ski, and that the skier can leverage the ski into direction. The body being aligned through the major joints, the head and shoulders, the hips, the knees and the ankles, will help to achieve both balance and leverage. Some skiers do this with a little more compression and some with longer legs, but it can be done either way.
Personally, it is much more challenging to keep my legs straighter than it is to sink into them a little. We all have our own natural styles, and sometimes going against that too much is more detrimental than it is helpful.
A couple of things to think about... What would it be like to ski if you had braces on your knees and ankles that allowed for zero flex? How would slalom styles evolve if we were able to ski the course with zero wakes?