I thought up this exercise for pre-season alpine training, although I'm sure it's been done before. You put two BOSU balls side by side, touching each other and you simply do one-leg hops from one BOSU to the other for a set number of reps on each leg.
When I do these I focus on keeping my knees slightly bent, my feet facing straight ahead and close together, and my core tight and in control.
What do you fitness gurus think of this exercise from a muscle activation perspective? I'm not trying to mimic ski movement exactly, I just thought that isolating each leg and performing a lateral balance exercise that utilizes jumps might be transferable to the hill?