Abstract: A fin plug (10) for installation in a water craft, said fin plug (10) including: a first open cavity (20) adapted to receive a base portion (15) of a water craft fin (50); and, a resilient biasing rod (30) and a protruding member (35) cooperating with the biasing rod, said protruding member being adapted to abut the base portion (15) of said fin (50) when received in said first open cavity (20); wherein said biasing rod and protruding member are adapted to apply a force to the base portion of said fin to inhibit removal of said fin from said first open cavity.

Abstract: A fin plug (10) for a water craft, said fin plug (10) including: a top surface (15) and a bottom surface (20); at least one fin cavity (25), for receiving a base element of a fin, extending inwardly from at least one opening in the top surface (15); and at least one hole (35) or recess in the top surface (15) adapted to be filled with foam.

Abstract: A securing arrangement for securing a water craft fin to a water craft having a fin plug, the fin plug having a first open cavity configured to receive a base portion (4018) of the water craft fin. The securing arrangement includes a resilient biasing rod (4030) and a protruding member (4035) cooperating with the biasing rod (4030). The protruding member (4035) is adapted to actuate when the base portion (4018) of the fin is inserted into the first open cavity of the fin plug so that the biasing rod (4030) and the protruding member (4035) inhibit removal of the fin from the first open cavity.

Abstract: A fin plug (10) for installation in a water craft, said fin plug (10) including: a first open cavity (20) adapted to receive a base portion (15) of a water craft fin (50); and, a resilient biasing rod (30) and a protruding member (35) cooperating with the biasing rod, said protruding member being adapted to abut the base portion (15) of said fin (50) when received in said first open cavity (20); wherein said biasing rod and protruding member are adapted to apply a force to the base portion of said fin to inhibit removal of said fin from said first open cavity.

Abstract: A fin plug (10) for a water craft, said fin plug (10) including: a top surface (15) and a bottom surface (20); at least one fin cavity (25), for receiving a base element of a fin, extending inwardly from at least one opening in the top surface (15); and at least one hole (35) or recess in the top surface (15) adapted to be filled with foam.

Abstract: A fin plug assembly, for a surfcraft, including: a fin plug including a flat upper portion having an external perimeter and top and bottom surfaces, at least one fin cavity for receiving a base element of a surfcraft fin extending inwardly from at least one opening in the top surface, a base portion extending from said bottom surface and surrounding said at least one fin cavity; and a high density foam body having an upper surface with a fin plug cavity in said upper surface and a continuous side wall; wherein the base portion of the fin plug is located within said fin plug cavity and said fin plug is firmly affixed to said high density foam body.

Abstract: A fin (410) with a discrete structural strand layer (420) that may include high tensile carbon fibre strands (422, 424) and high tensile strength and toughness Kevlar (426) strands. These structural strands may have a tensile strength substantially greater than the other materials typically used in a fin body. The structural strand layer (420) provides an economic and ready technique to vary and control a stiffness characteristic of the fin in a variety of directions or about a variety of axes of rotation; without varying the other common components that may be used in a fin body, for example core (412), layers of fibreglass fabric (414) and/or resin.

Abstract: A fin plug assembly, for a surfcraft, including: a fin plug including a substantially flat upper portion having an external perimeter and top and bottom surfaces, at least one fin cavity for receiving a base element of a surfcraft fin extending inwardly from at least one opening in the top surface, a base portion extending from said bottom surface and surrounding said at least one fin cavity; and a high density foam body having an upper surface, a lower surface, a fin plug cavity extending from said upper surface to said lower surface, and a continuous side wall extending about said foam body and between said upper surface and said lower surface; wherein the base portion of the fin plug is located within said fin plug cavity and said fin plug is firmly affixed to said high density foam body.

Abstract: A system for attaching fins (11) to surfboards and other surf craft utilizes fixing elements (12) embedded in the body of the board, these elements having slots (13) which receive tabs (18) extending from the end of the fin. The tabs are removably secured by grub screws (16) enabling fins to be removed for transport or upon damage.

Abstract: A system for attaching fins (11) to surfboards and other surf craft utilizes fixing elements (12) embedded in the body of the board, these elements having slots (13) which receive tabs (18) extending from the end of the fin. The tabs are removably secured by grub screws (16) enabling fins to be removed for transport or upon damage.

Abstract: A system for attaching fins (11) to surfboards and other surf craft utilizes fixing elements (12) embedded in the body of the board, these elements having slots (13) which receive tabs (18) extending from the end of the fin. The tabs are removably secured by grub screws (16) enabling fins to be removed for transport or upon damage.