Use a ground line to check your setup tilt
To rehearse the setup, the coach uses any straight line on the ground - a seam, a crack, or a club laid down. He describes two checkpoints: the outside of the trail hip lining up to the inside of the trail foot, and the hips and ankles in line with the club so he can tilt over without sitting back, with the shoulders ending just past the toes.
Channel: PorzakGolf
Watch official source at 4:26