Full Swing · Mental Model

Drive the pelvis with your left foot, don't spin your hips

Rather than consciously trying to spin your hips open, think of the lower body, the left leg and left foot, as what moves the pelvis. The instructor argues the pelvis is just a bone with no power of its own, so people who try to force the hips open are not really driving it. Using the left foot to move the pelvis the right way, early and first, is his cue for correct lower-body-led rotation.