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. Once the pin is in the pin slot, the tag and attached fin, can be
moved longitudinally to a selected position. Thereafter, a grub screw in
the top wall is used to apply a force to the clamp and cause the pin to be
constrained within the pin slot, thereby fixing the tag (and the attached
fin) to the sportboard.
