A pedal assembly and steering assembly are disclosed for converting an inflatable, drop stitch paddle watercraft into a pedal watercraft. The pedal assembly includes a mounting plate and mounting bracket for supporting a geared drive shaft in an opening extending through the floor of the watercraft. The steering assembly includes a rudder connected to a tiller through push pull cables.

A wheeled system for engagement with a surfboard is provided. Wheeled trucks are configured for removable engagement with a lower surface of a surfboard using mounting plates or recessed connections. The removable engagement of the trucks allow a rider to ride on support surfaces such as the sidewalk, and to remove the trucks to employ the surfboard in the water. The removable trucks may be retrofitted to existing surfboards with an elastic or mechanical engagement, or may be provided in combination with a surfboard.

Systems and methods to allow a user to be both towed by and control a personal flotation craft from behind and underneath while engaging in underwater exploration comprising one or more propulsion devices, an optionally foldable tow shaft and one or more directional controllers. Wherein the systems and methods may further comprises one or more remotely controllable speed modulators, controlled by a user from behind and underneath the personal flotation craft, while engaging in underwater exploration.

A water sports board includes a board body, a seat back and a pair of pedals. The seat back is arranged on a top surface of the board body for a user's back to lean on. The pair of pedals arranged on the top surface of the board body for the user's feet to step on the pair of pedals.

A water sports board includes a board body, a seat back and a pair of pedals. The seat back is arranged on a top surface of the board body for a user's back to lean on. The pair of pedals arranged on the top surface of the board body for the user's feet to step on the pair of pedals.

A recreational assembly includes a body, the body defining an aperture extending through the thickness of the body from the upper surface to the lower surface, and two lumens extending within the body. The assembly also includes two or more stringers removably insertable into the lumens, respectively, and a plug removably insertable into the aperture of the body. The plug includes upper and lower plates configured to be secured within the aperture. Each of the upper and lower plates includes an anchor on one side configured to connect with an end of one of the stringers.

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.

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.

Systems for coupling two or more watercrafts, and assemblies comprised of systems and watercrafts. A watercraft coupling system includes a forward connector rod and an aft connector rod that are configured to be attached to forward and aft portions of adjacent first and second watercrafts, and may include additional components such as stabilization straps, nets, and rod cushions for safety and comfort. The system may be used to stably couple two or more watercrafts, such as recreational watercrafts, in a side-by-side arrangement to form a watercraft assembly that may be used by two or more users cooperatively.

Systems for coupling two or more watercrafts, and assemblies comprised of systems and watercrafts. A watercraft coupling system includes a forward connector rod and an aft connector rod that are configured to be attached to forward and aft portions of adjacent first and second watercrafts, and may include additional components such as stabilization straps, nets, and rod cushions for safety and comfort. The system may be used to stably couple two or more watercrafts, such as recreational watercrafts, in a side-by-side arrangement to form a watercraft assembly that may be used by two or more users cooperatively.