Wanting to get some different opinions from ski pros on this topic.
When I did my CSIA L2 in Dec, my L4 examiner spent some on-hill time deconstructing what he called "the myth" of hand position mattering for your balance. Ie. his claim was that it doesn't really matter whether your arms are down at your sides when you ski, or forward in the way that's classically taught, or pretty much anywhere else. It won't affect your balance. I was somewhat skeptical, but tried skiing some intermediate turns with my hands pointing every which way and found that it really didn't make much difference. The thing that convinced me most was one of the examiner's comments that resonated with what I've observed in people's skiing -- rather than hands pulling you in a certain direction (eg. hands forward making you stay balanced more forward), where a skier's hands are is often a good clue to where their balance is not, and therefore what balance problem they're intuitively trying to compensate for. Ie. if someone skis in the back seat, they often hold up their hands high and forward as much as possible to try to push their balance a bit more into neutral (with little effect). The moral of the story was, "Don't worry about where your hands are, and just do whatever feels comfortable and natural".
I happened to take a lesson with one of the higher level instructors at Sugarloaf in Maine a few weeks later, and he insisted that "Maybe that's how they do it in Canada, but over in 'Murica, you gotta keep your hands up and forward!"
So what do folks on here think and/or teach?