See HackMotion in action during a live lesson demonstration at Open Forum 11. Ron Cheney walks through calibrating the wrist sensor, diagnosing excessive extension (cupping) at the top of the backswing, and using real-time biofeedback to guide a player toward a more neutral wrist position.
The demo shows a real-time shift from 53° of extension to 28° at the top, producing a dramatic ball flight change from slice to dead straight.