Turn your shoulders in a circle without swaying
The coach says that if you can turn your shoulders in a circle without sway, you will return the club back to the same spot. In the swing demo, the shoulders stay in that same circle going back, the weight stays forward without shifting off the ball, and coming down the club returns right back to where it started, at the bottom of the swing arc.
Channel: SagutoGolf
Watch official source at 2:56