The start of the downswing is an athletic unwinding from the ground up sequence. It is mandatory that there is more weight on the front leg to start this sequence. You can not start to unwind with more weight on the back foot. Traditional golf instruction has been sliding and loading up the back side and causing the need to recover from this problem so they created the “Bump and Turn” recovery technique that fixes the fact that you slid your weight to the back foot to start with. This all has to go! If on the backswing you maintain at least 60% of your weight on the front foot, it creates much more potential power because the shoulders can wind up against a firm lower body. Then on the downswing since your weight is already on the front foot, the small muscles in the knees can easily start to unwind the larger thigh muscles in the legs, that engage the hips to unwind the torso and shoulders. The arms & club just go along for the ride. This also fixes many miss hit shots once all the sliding is gone. When you don’t slide, you get Wind up, then Unwind … not slide and wind up, then slide back and unwind. Welcome to the middle of the club face almost every time!
Now, what generally upsets this natural, easy and athletic movement, is the impulse to hit at the ball with the hands. Learn to keep your hands passive with constant grip pressure and the Large Muscles will control your Backswing, Downswing … Golf Swing… Ross