You skull it, you chunk it, or (most often) you hit what feels like a perfect chip… and it dies 10 feet short like it hit a brick wall. All because Bermuda grass is a lying, grabbing, grainy son of a gun.

You take a lesson, get a great new “feel,” hit it pure for a week or two… and then, poof. The old swing creeps back in, the ball starts going sideways again, and you’re left wondering, “What the hell happened?”

Achieving consistency in golf hinges upon establishing solid fundamentals. One fundamental of importance is the role of the lower body in...