Abstract: A sailboat mast is provided with a non-conducting upper end portion. The non-conducting portion is formed by wrapping a plastic core with resin-impregnated fiberglass and molding the wrapped core. The lower end of the non-conducting portion is provided with a necked-down portion which is inserted into the upper end of a conventional metal mast. The trailing side of the non-conducting portion has a pair of longitudinally extending grooves, and a plastic luff track includes a pair of attaching flanges which are inserted into the grooves.

Abstract: A sailboat mast is provided with a non-conducting upper end portion. The non-conducting portion is formed by wrapping a plastic core with resin-impregnated fiberglass and molding the wrapped core. The lower end of the non-conducting portion is provided with a necked-down portion which is inserted into the upper end of a conventional metal mast. The trailing side of the non-conducting portion has a pair of longitudinally extending grooves, and a plastic luff track includes a pair of attaching flanges which are inserted into the grooves.

Abstract: A boom assembly is pivotally attached to the mast of a sailboard for pivotal movement between a use position and a storage position. The boom assembly includes a boom bracket and a pair of booms which are connected to the boom bracket. An elastic connecting member is attached to the bracket and is pivotally connected to the mast. The bracket includes a pair of camming surfaces which are engageable with the mast as the bracket moves from the storage position to the use position, and the camming surfaces tension the elastic connecting member to provide a frictional retention force between the camming surfaces and the mast which tends to retain the bracket in the use position.