My $.02 on this question, a surprising amount of pivot. Lynn and I worked on this in my lesson last week, and granted I wasn't using much lower body to begin with, but even on short acquired motion shots of the distance you describe, he stood behind me and rotated my hips to the right much more than I would have thought for that short of shots. Once I started doing it the results were much better overall. Also, if you have the Brian Gay fundamentals video, there is a section where Brian is hitting little A.M. chips and is finishing with his belt buckle at the target, IE pretty full pivot. They discuss the use of the pivot in that shot as well.