Abstract: An apparatus (1) for attaching each end of a rope (12) to the boom of a sail board so that the rope (12) can be used by a rider with a "Hawaiian Harness" the apparatus (1) having in each case a frame (2) with a pliable member (3) held to the frame (2) and adapted to extend around the boom arranged so that with the frame (2) lying alongside the boom tension on the rope (12) will cause the frame (2) to tighten a gripping hold of the pliable member (3) on the boom. The apparatus provides for good retention of the rope position during periods of non-use and facilitates adjustment of its position during use by a sail board rider.

Abstract: A quick release-hook to be secured to the chest harness of the rider of a board sailer. The hook helps in bracing the sail of the board sailer by engaging a loop of a rope attached to the boom-like rail of the board sailer. The hook (9) pivots from hooking to release position when the rider moves the rope through the hook so that thicker portions of the rope can press abutment members (21), forcing resilient tongue (17) out of engagement with the hook which then pivots, passing through slot (25) between members (21) to release the rope.