I had a lot of trouble figuring out what skiers are supposed to do.
They felt really effective once I started just angling my hips at 45 degrees as though I was in a boxing stance and maintaining the 45 degrees through the entire squat. I feel a fantastic stretch in my hips and ankles. I feel like this helped open up my hips as much as the standing hip circles, which I did not expect.
I'm just posting this in case this description helps people who couldn't figure them out from any other description.