I once had a coach ask me where I should be getting into position. I said when I'm getting ready to pull out. He then threw a wet glove at my head and said "No, you dumba$$. You just gave up 300' of practice. I want you getting into position tall over the ski, your hips squared, and your arms low and long as soon as the ski planes off after the pullup. Then if you dick it up in the course, I want you back in that exact same position when you come out of the gate, all the way til you sit down. Sooner or later, that 300' at the beginning and that 300' at the end starts to be reflected in your muscle memory. "