Release like skipping a rock, not flipping the hand
The release feels like skipping a rock: a non-rotational, non-manipulated throw where the hand moves from extension into flexion rather than rotating or flipping over. The speaker points to this as the natural motion he looks for in a swing.
Channel: Todd Graves
Watch official source at 2:10Why this context matters
Demonstrated with a golf ball as a skip-a-rock throwing motion.