@Horton i see what you are saying. I guess where I am bit fuzzy is that really there are two different factors at play once you roll onto the inside edge. You want to be up on the boat as quickly as possible BUT you are actually decelerating the whole time while moving up right? You need to be in order to turn at or less than the actual boat speed.
What the preturn does, and rate that you do it will ultimately allow you to turn earlier at the buoy right?
It’s nice to think that the slalom swing is a perfect pendulum and that you can just ride it and turn at the apex but I think the better skiers create where the ski apex’s by way of their preturn.