Or perhaps not on a yacht, or perhaps just a liability notice? <img src="http://www.catsailor.com/forums/images/graemlins/crazy.gif" alt="" />
Anyway, neat system. Something to ponder for solo sailing. Have you tried releasing it under load? I know some kitesurfers have used similar shackles and been unable to release under load. The loads are quite large when you are being towed behind your boat. Your boots _will_ be sucked off if you fall off at speed. <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />