Abstract: Fixture for attaching a wishbone element to a mast of a sheet of sail on a sail-board comprising a unitary member having a pair of holes or sockets at one end thereof for reception and retention of free ends of a wishbone element to be assembled therewith, a notch with a cylindrical surface extending between and separating the pair of holes or sockets whereby a portion of a mast may be retained in seated relationship against the notch, and a hook extending from one side of the unitary member over which a loop of a semi-elastic strap securing a mast in slip-knot manner may be readily passed and be effectively retained thereby.