A personal watercraft includes a floatation member, a thrust assembly, a steering assembly, and a braking assembly. The assemblies may be actuated either mechanically or electrically. The thrust assembly is human powered, solar powered, or electric powered. The thrust, steering, and braking assemblies can be added after-market to an existing stand-up paddle board (SUP), or built into one or a plurality of SUPs during initial manufacturing. When the thrust assembly is human powered, it is leg or arm powered. When the thrust assembly is leg powered, the legs can move backward and forward in a sliding motion, up and down in a stomping fashion, or move in a loop trajectory. When the thrust assembly is arm powered, the arms can move forward/backward together or separately. The thrust assembly includes one or a plurality of paddles or flippers that are positioned to the side or under the SUP.

The disclosure includes systems, assemblies, sub-assemblies and methods for removably and securely attaching a hydrofoil to a board used in water sports. At least some of the systems include toolless removable attachment and/or toolless forward and backward position adjustment. In various embodiments, the attachment includes a U-Rail adapter mechanically mating with a U-Trench frame assembly disposed within said board.

The disclosure includes systems, assemblies, sub-assemblies and methods for removably and securely attaching a hydrofoil to a board used in water sports. At least some of the systems include toolless removable attachment and/or toolless forward and backward position adjustment. In various embodiments, the attachment includes a U-Rail adapter mechanically mating with a U-Trench frame assembly disposed within said board.

A Kinetic Infinity Mount System (KIMS) allows different reusable and removable fins to be mounted into the cavity of a finbox of a surfboard or other waterborne vessels with the dynamic feature of toe in or toe out and camber in or camber out simultaneous or separate adjustments. Toe angle adjustment is accomplished by an outer, square, male gear which can be moved in and out of a female, circular track. At the back of the outer gear is the circular, female gear. Camber angle adjustment is accomplished by moving a front and rear male, circular gear in and out of the female side of the outer gear along the same circular plane as the outer gear. The KIMS allows different types of fins to be mounted into the finbox and then adjusted about its own axis and around a plane.

A watercraft and a waterproof electronics container are provided. The watercraft includes a flotation portion. A strut is removably affixed to a portion of the watercraft. A first connector portion is mounted to the upper end of the strut. A waterproof electronics container includes a second connector portion is disposed such that the second connector forms at least one electrically conductive pathway with the first connector portion when both are affixed to the watercraft. The waterproof electronics container is removably affixed to the said watercraft. In one aspect, the waterproof electronics container houses a power source capable of powering an electric motor that propels the watercraft.

Provided herein are fin retention systems adapted to releaseably attach a fin to a waterboard, comprising an outer carrier, an inner carrier, a fin carrier, and an end cap, wherein the fin retention system is adapted for movement in a generally for-and-aft direction, side to side angular rotation directional motion, and/or planar angle rotation directional motion.

Provided herein are fin retention systems adapted to releaseably attach a fin to a waterboard, comprising an outer carrier, an inner carrier, a fin carrier, and an end cap, wherein the fin retention system is adapted for movement in a generally for-and-aft direction, side to side angular rotation directional motion, and/or planar angle rotation directional motion.

A piece of inflatable sports equipment, preferably for water sports, is provided with a board (1) which can be inflated with a gaseous medium, preferable air, by means of a pump unit (6) having a compressor (7). The pump unit (6) is integrated together with the compressor (7) in the board (1) and preferably comprises assemblies (8, 9, 11) which drive the compressor and are installed together in a housing (12) which can be removed from and inserted into the board (1) and fastened therein. Inflation of the board can therefore be carried out anywhere and at any time during use of the board, since the means necessary for this are installed in the board itself.

A piece of inflatable sports equipment, preferably for water sports, is provided with a board (1) which can be inflated with a gaseous medium, preferable air, by means of a pump unit (6) having a compressor (7). The pump unit (6) is integrated together with the compressor (7) in the board (1) and preferably comprises assemblies (8, 9, 11) which drive the compressor and are installed together in a housing (12) which can be removed from and inserted into the board (1) and fastened therein. Inflation of the board can therefore be carried out anywhere and at any time during use of the board, since the means necessary for this are installed in the board itself.

A hydrofoil wing attachment system that comprises a strut or struts and a hydrofoil wing fastening apparatus for various watercraft including, but not limited to, surf boards, kite boards, and stand up paddle boards. In one embodiment the system interfaces with legacy surfboard fin-box systems, thus allowing a user to interchange fins for hydrofoils and transform their watercraft into a hydrofoil watercraft. Other embodiment's of the system allow the implementation of a single-strut/wing combination and also a double-strut/wing combination among other variations. The design of the wing clamping apparatus allows the user to mechanically secure the wing and also configure the angle of attack of the hydrofoil wing. The modular design, configuration options, and high degree of interchangeability of the hydrofoil wing attachment system enables the user to experiment with multiple strut/wing configurations, wing/strut designs, and also the angle of attack.