Hi, I've used the "Ball & Socket" system for about 20 years now. It's nothing new. (see photo attached) I like it much better than the hook as there is no metal to hit you in the teeth or eyeball when not using it and you don't punch a hole in your boat climbing back on after a capsize. As it applies to this discussion, it is probably no easier or harder to release than the hooks. However, it seems to me either is adequate for complying with rule 40.2