Abstract: A water skiing float, jacket attachment structure consisting of a jacket externally sleeved around the water skiing float utilized for protection, towing, and grasping which has through-holes of identical size disposed in alignment with input/output air stems projecting from the water skiing float such that after being fitted over them, sealing retainers clip it onto water skiing float. After sleeving around the water skiing float, there are round, tooth-shaped ligature openings in an alternating arrangement along its interior edge, with each ligature opening having a perforation at its lateral margin through which a rope is threaded for binding and attachment around the inside of the water skiing float. As such, when utilized at rapid speed or in powerful currents, the practical invention herein prevents the dislodging of the water skiing float, the easy movement of the jacket, and the unrestrained tearing of the ligature openings that could result in injury.

Abstract: A water skiing float, jacket attachment structure consisting of a jacket externally sleeved around the water skiing float utilized for protection, towing, and grasping which has through-holes of identical size disposed in alignment with input/output air stems projecting from the water skiing float such that after being fitted over them, sealing retainers clip it onto water skiing float. After sleeving around the water skiing float, there are round, tooth-shaped ligature openings in an alternating arrangement along its interior edge, with each ligature opening having a perforation at its lateral margin through which a rope is threaded for binding and attachment around the inside of the water skiing float. As such, when utilized at rapid speed or in powerful currents, the practical invention herein prevents the dislodging of the water skiing float, the easy movement of the jacket, and the unrestrained tearing of the ligature openings that could result in injury.

Abstract: An inflatable boat comprising a unitary bottom which is comprised of a plurality of parallel, elongated air chambers and has two opposite ends curving upwards respectively, two bulwarks separately attached to the bottom at two opposite sides through a welding joint, two hood-like connecting members connected between the two bulwarks and the bottom at two opposite ends. Parallel grooves are formed in the bottom between the elongated air chambers for guiding waves so as to reduce resisting force during sailing.