I’d like to second everything said above. I have very similar objectives for the Grand Teton, Cascade volcanoes, and the Canadian Rockies. It seems to me one legged squats and box steps do a pretty good job of training our “shock absorbers” and scotts killer core helps us hold a strong form, but any other strength tips for holding those precious edges would be great.
Also, I’ve noticed in years past that I have a tough time staying below Zone 3 during the descents back to the car. I’ve often felt it is the descent that makes me tired and sore the next day, not all the Zone 1 skinning. Also, my form starts to really break down on long descents, which can be sketchy near the bottom, during the tight tree skiing phase. Any tips?