A resistance water board paddling system includes a board attachment unit having functionality for engaging a water board such as a surfboard, a paddleboard or a kayak. At least one elongated resistance band is removably connected to the board attachment unit, and includes a predetermined resistance level for simulating the resistance encountered by a user paddling a board along a water surface. An anchor assembly having an inelastic tether is coupled to the other end of the at least one resistance band. A ground anchor is selectively and removably attached to the other end of the inelastic tether or a skimmer attachment device is selectively and removably attached to the other end of the inelastic tether. The anchor assembly functioning to immobilize the system during user operation.

Diver propulsion devices and methods of propelling the devices and divers upon and beneath the sea are presented. A diver propulsion device is comprised of a wing buoyant in water, an electric motor propulsion system, a leash interconnecting the wing and diver, which leash may integrate control circuitry of the motor, photovoltaics atop the wing, and, batteries, each electrically connecting the motors, fins attaching the wing provide hydrofoil flight stabilization, and foot constraints attaching a deck of the wing. The wing is a hydrofoil, and the diver stands and lies upon the deck of the wing, and, during hydrofoil flight, the diver is substantially above the sea and the wing is seaborne. In hydrofoil flight, the device may be motor propelled, or, by the diver heaving and pitching the device, or, by both methods simultaneously. Undersea, the device tows the diver by motor power energized photovoltaically, and, or, by battery.

Systems and methods to provide an exterior stringer system inflatable paddleboard. The exterior stringer system inflatable paddleboard maintains the benefits of a baseline inflatable paddleboard while providing increased strength, such as increased rigidity or stiffness. The exterior stringer system is positioned on the bottom surface of a baseline inflatable paddleboard. In one embodiment, the exterior stringer system is formed by a set of longitudinal stringers positioned on opposite sides of an inflatable paddleboard and a set of transverse stringers arranged in an X configuration between the longitudinal stringers.

Systems and methods to provide an exterior stringer system inflatable paddleboard. The exterior stringer system inflatable paddleboard maintains the benefits of a baseline inflatable paddleboard while providing increased strength, such as increased rigidity or stiffness. The exterior stringer system is positioned on the bottom surface of a baseline inflatable paddleboard. In one embodiment, the exterior stringer system is formed by a set of longitudinal stringers positioned on opposite sides of an inflatable paddleboard and a set of transverse stringers arranged in an X configuration between the longitudinal stringers.

A wing, buoyant in water has an upper wing surface comprising a deck upon which a rider stands, and, the wing is in water. A foot constraint proximate the wing leading edge and fixedly attaching the wing projects outwardly from the deck to release-ably receive the rider's forward foot. With the rider standing with both feet upon the deck, and the rider's forward foot ensconced within the foot constraint, and with the rider's aft foot proximate a trailing edge of the wing, the rider bodily heaves and pitches the wing to obtain a chordwise forward velocity thru the water. The forward foot constraint enables the rider to upheave the wing. A second foot constraint may attach the deck proximate the wing trailing edge. Another foot constraining system is comprised as a frictional device broadly applying the deck, and, may be used in addition to or in lieu of other constraints.

The present invention relates to an inflatable tandem surf bodyboard, methods of making, and a kit that includes a tandem surf bodyboard, an air pump, a maintenance kit, and a carry bag. The tandem surf bodyboard can accommodate more than one rider, allowing two riders to share and surf a wave. The inflatable tandem surf bodyboard comprises a base that is cut into the shape of a surf bodyboard, a base fabric layer is applied over the base, an intermediate portion material forms an air chamber, an upper layer is fastened to the intermediate portion material, a deck pad layer is applied over the upper layer, a first rail layer is applied around the perimeter of the surf bodyboard sealing the edges, and a second rail layer is applied over the first rail layer. An air inlet allows the tandem surf bodyboard to be inflated.

Systems and methods to provide an exterior stringer system inflatable paddleboard. The exterior stringer system inflatable paddleboard maintains the benefits of a baseline inflatable paddleboard while providing increased strength, such as increased rigidity or stiffness. The exterior stringer system is positioned on the bottom surface of a baseline inflatable paddleboard. In one embodiment, the exterior stringer system is formed by a set of longitudinal stringers positioned on opposite sides of an inflatable paddleboard and a set of transverse stringers arranged in an X configuration between the longitudinal stringers.

Systems and methods to provide an exterior stringer system inflatable paddleboard. The exterior stringer system inflatable paddleboard maintains the benefits of a baseline inflatable paddleboard while providing increased strength, such as increased rigidity or stiffness. The exterior stringer system is positioned on the bottom surface of a baseline inflatable paddleboard. In one embodiment, the exterior stringer system is formed by a set of longitudinal stringers positioned on opposite sides of an inflatable paddleboard and a set of transverse stringers arranged in an X configuration between the longitudinal stringers.

The present invention relates to an inflatable tandem surf bodyboard, methods of making, and a kit that includes a tandem surf bodyboard, an air pump, a maintenance kit, and a carry bag. The tandem surf bodyboard can accommodate more than one rider, allowing two riders to share and surf a wave. The inflatable tandem surf bodyboard comprises a base that is cut into the shape of a surf bodyboard, a base fabric layer applied over the base, an intermediate portion material that forms an air chamber, an upper layer that is fastened to the intermediate portion material, a deck pad layer that is applied over the upper layer, a first rail layer that is applied around the perimeter of the surf bodyboard sealing the edges, and a second rail layer that is applied over the first rail layer. An air inlet allows the tandem surf bodyboard to be inflated.

In some implementations, a stand up paddleboard (SUP) transportation apparatus to facilitate transportation of a SUP to and from a shoreline comprises a sled material and an adjustable attachment mechanism to temporarily attach the sled material to the SUP. The sled material has a top surface for supporting the SUP and a bottom surface for dragging over a ground surface, a longitudinal axis passing between a front end and a back end, and a latitudinal axis passing between a left side and a right side, wherein the longitudinal axis spans at least a portion of a length of the SUP and the latitudinal axis spans at least a width of the portion of the length of the SUP being supported. The adjustable attachment mechanism is able to join together to adjustably secure the sled material to the SUP and able to detach to release the sled material from the SUP.