Abstract: A fin and tag are formed from a unitary structure. The tag releasably secures to a tag engagement member embedded in a sportboard. A tag-pin extends through the tag about perpendicular to the longitudinal axis of the tag with first and second tag-pin ends extending outward from the tag. The engagement member has a longitudinal center slot for receiving the tag, and at least one bilateral slot intersecting the longitudinal center slot for allowing passage of the tag-pin as the tag is inserted in the center slot. The first and second tag-pin ends are respectively secured in first and second clamping engagements disposed on opposite sides of the center slot. Each clamping engagement is suspended by opposing flexible anti-torsion suspension members, and has elongated upper and lower clamping members between which a tag pin end is secured. Each clamping engagement is tightened and loosened by a cap screw and T-nut engagement.

Abstract: A foot traction pad is provided for a sport board having a built-in arch. The arch is constructed of a bladder containing a fluid that will move and conform to a user's foot and continue conformance whenever there is foot movement. The bladder underlies and attaches to a pad covering. Extending upwardly from the plane of the pad is a foot abutment structure. The structure is spaced-apart from the rear end of the bladder and may include one or more small bladders. The abutment structure is aligned laterally in relation to the longitudinal axis of the bladder. The pad covering overlies the abutment structure. The pad may be an integrated unitary body or it may have peripheral segments for accommodating different sport board sizes and shapes.

Abstract: A sportboard fin attachment assembly in accordance with the present invention includes a plug that is inserted into the cavity of a socket to define an enclosure. The enclosure is embedded into the underside of a sportboard so that the top wall of the enclosure is co-planar with the sportboard underside. The enclosure includes a tag slot that extends through the top wall into communication with the cavity. The plug has a clamp that forms a pin slot that is oriented perpendicular to the tag slot and is in communication with the cavity. The assembly also includes a fin and a tag that is releasably attached to the base of the fin. Alternate tags having beveled top surfaces are available for attachment to the fin. The beveled surfaces will cause the fin to be inclined at predetermined angles. A tag pin extends outwardly from a tag sidewall. When the tag is moved through the tag slot into the cavity, the tag pin will enter the pin slot.