A variable flexible bodyboard comprises a lightweight, generally elongated, foam core material having a top skin layer and a bottom skin layer with a front nose end and a rear tail end. The bodyboard has also an elongated stringer element having a one end and an other end, and composed of at least one stiffener material, of a defined length, to impart stiffness to the bodyboard, and at least one flexible material, of a defined length, to impart flexibility to the bodyboard. The stringer element is positioned and secured within the foam core material of the bodyboard; and a helical spring is disposed within the stringer element imparting additional resiliency to the stringer element.

A sled includes a hull having walls defining an inboard hole. A lip extending outward from the hall forms an outboard hole opposed to the inboard hold. A support member extends through the inboard hold and the outboard hole, as well as through the hole of a strap, thereby securing the strap to the hull.

A rescue sled for picking up victims of water or ice accidents and transporting them to safety, which sled can be carried in the back of an ambulance or other vehicle.

Fin assemblies for a variety of watersport boards including wakeboards, sailboards, surfboards and the like. The fin assemblies include a fin cap, at least one fin base and at least one locking member. Fin assemblies are secured to a watersport board by passing at least one locking member through channels in the board and fin base and into sockets in the fin cap. Fin assemblies are reconfigured by first removing the locking members, arranging the desired combination of fin cap and fin base suitable for current water conditions and/or user ability and then resecuring the fin assembly to the board with locking members.