Personal watercraft, namely, powered foil-boards, powered surfboards and powered paddleboards; Propulsion systems for personal watercraft, namely, propulsion systems for powered foil-boards, powered surfboards, and powered paddleboards, the systems consisting of a hydrofoil, a propeller, a motor to power the propeller, a battery, a battery charger, and a wireless remote control to control the motor; conversion kits to make standard personal watercraft, namely, foil-boards, surfboards and padd...