[Jeff]

DG - You wrote-: "If you rotate the hips at the beginning of the downswing your shoulders will move outward....an over the top move."

I agree with you. A golfer should never rotate the pelvis at the start of the downswing. A golfer should first shift the pelvis left-laterally in a hip squaring action before rotating the pelvis in an assertive left hip clearing action. If the pelvis rotates back 45 degrees during the backswing, then there needs to be a 135 degree pelvic rotation to get to a finish position where the pelvis is square (parallel) to the target. At the start of the downswing, there is a hip shift-rotation movement that shifts the pelvis left-laterally and squares the pelvis. The left-lateral pelvic shift movement that squares the hips (to a sit down look) also involves a 45 degree pelvic rotation. However, the left-lateral shift component dominates the lower body movement. The true left hip clearing action - a further 90 degree rotation of the pelvis - occurs in the later downswing.

One can clearly see Ben Hogan's shift-rotation movement of the pelvis in his initiating downswing action in this video lesson. Note how the pelvis squares in the early downswing (in his pump-it drill action).

Watch how the lower body movement causes his right shoulder to move downplane and causes his clubshaft to shallow-out.

Jeff.