A method to convert a jet board, which may include an electric surfboard, an electric standup paddle board, an electric hydrofoil board, into a personal watercraft (PWC) using at least one strap. The method includes attaching an add-on module onto the jet board where the add-on module provides handles and a seat but does not provide a source of propulsion. The resulting personal watercraft is, instead. driven by the propulsion system of the jet board.

A method to convert a jet board, which may include an electric surfboard, an electric standup paddle board, an electric hydrofoil board, into a standing personal watercraft (PWC). The method includes attaching an add-on module onto the jet board where the add-on module provides handles and a seat but does not provide a source of propulsion. The resulting personal watercraft is, instead. driven by the propulsion system of the jet board.

A method to convert a jet board, which may include an electric surfboard, an electric standup paddle board, an electric hydrofoil board, into a standing personal watercraft (PWC). The method includes attaching an add-on module onto the jet board where the add-on module provides handles and a seat but does not provide a source of propulsion. The resulting personal watercraft is, instead. driven by the propulsion system of the jet board.

A system for converting a paddleboard into a gigging vessel includes a standard stand-up paddleboard outfitted with a conversion system. The conversion system includes a pair of opposing pontoons, a pair of opposing guards each adjacent to one pontoon, and retaining arms and retaining straps for securing pontoons and guards to the stand-up paddleboard. The system includes a pair of wheels that can be lowered for transportation across land, and raised for use in aquatic environments; lights; and a storage compartment for items and captured fish. In one embodiment the pontoons and guards can be folded up for transportation.

A board paddling training apparatus for assisting in improving a user's paddling technique and strength. In particular, the board paddling training apparatus includes a buoyant board, such as a board adapted for surfing, bodyboarding, paddleboarding, or other board-related sport that entails paddling, and includes a resistance mechanism that creates drag or resistance against a user's paddle stroke. Some implementations of the resistance mechanism can be adjustable in order to create a variety of resistance against the user's paddle stroke and board movement.

A board paddling training apparatus for assisting in improving a user's paddling technique and strength. In particular, the board paddling training apparatus includes a buoyant board, such as a board adapted for surfing, bodyboarding, paddleboarding, or other board-related sport that entails paddling, and includes a resistance mechanism that creates drag or resistance against a user's paddle stroke. Some implementations of the resistance mechanism can be adjustable in order to create a variety of resistance against the user's paddle stroke and board movement.

A bicycle and board apparatus comprising a buoyant board, a front wheel, a rear wheel and a steering member, and being mountable and usable in a first configuration as a bicycle in which the buoyant board is the bicycle's frame and in a second configuration as a surfboard by changing the orientation of the front wheel, the rear wheel or the steering member with respect to the buoyant board.

A paddleboard conversion insert for kayaks provides additional functionality to a user for a kayak watercraft, enabling the user to further utilize the kayak as a paddleboard, obviating the need to own and transport a second watercraft for access to both activities. An insert body has a kayak attachment surface for attachment within the cockpit of a kayak, and a top surface for the user to stand upon to use the kayak as a paddleboard. The kayak attachment surface may be contoured to match the shape of the deck of the kayak. At least one kayak-deck fastener facilitates removably attachment of the kayak attachment surface to the deck of the kayak.

A system for converting a paddleboard into a gigging vessel includes a standard stand-up paddleboard outfitted with a conversion system. The conversion system includes a pair of opposing pontoons, a pair of opposing guards each adjacent to one pontoon, and retaining arms and retaining straps for securing pontoons and guards to the stand-up paddleboard. The system includes a pair of wheels that can be lowered for transportation across land, and raised for use in aquatic environments; lights; and a storage compartment for items and captured fish. In one embodiment the pontoons and guards can be folded up for transportation.

A convertible inflatable stand-up paddle board includes a main body member defining a first aperture and optionally a second aperture, and one or more panels fixed to the main body member and covering a bottom end of the apertures. A foldable seat assembly is disposed in the first aperture, and a second seat assembly is disposed in the second aperture. The seat assemblies have a seat portion and a backrest portion. The backrest portion is movable between (i) a folded position wherein a surface of the backrest portion and an upper surface of the main body member define a standing surface for the stand-up paddle board, and (ii) an upright position wherein the backrest portion extends away from the seat portion. The stand-up paddle board is thereby convertible between a stand-up configuration and a sit-down configuration.