Abstract: Wakeboarding performance is improved using a vessel which is fitted with a towing frame having spaced supports attached on opposite sides of the vessel while coupling upper extremities of the supports with a bridging portion, to which a tow rope attachment point is fitted.

Abstract: A mounting system rigidly attaches a towing frame to a vessel deck, and includes a base having an arcuate top surface and a bottom surface conforming the deck. A joint member rigidly attached to the towing frame has an arcuate surface mating with the arcuate top surface of the base. The joint member has a cavity and a threaded bore extending through a wall for accessing the cavity. The threaded bore of the joint member is aligned with a bore extending through the base. A threaded shaft extends through a hole in the deck, through the bore in the base, and is threaded into the threaded bore of the joint member. A fastener attached to the shaft is used to bias the joint member against the base, and base against the deck for rigidly securing the joint member and thus the towing frame to the deck.

Abstract: Wakeboarding performance is improved using a vessel which is fitted with a skeletal towing frame having spaced supports attached on opposite sides of the vessel while coupling upper extremities of the supports with a horizontal bridging portion, to which a tow rope attachment point is fitted.

Abstract: A boat hull includes a dispersion tunnel extending fore and aft forming a channel within a hull bottom surface for receiving a flow of water. A gate is inserted into and out of the channel for affecting pressure on the hull bottom with movement between open and closed positions, wherein the gate is out of the channel and fully extended into the channel. By altering the depth of the gate into the channel, hull performance and wake shape are modified as desired.

Abstract: A water sports performance boat includes a hull having a sharpened angle keel for cutting into the water. Reverse chines are carried on port and starboard sides and extending from a forward portion of the hull to an aft portion for inducing a lifting of the bow at generally low boat speeds and for providing a stabilizing effect. Port and starboard spray pockets are located at the aft portion of the hull for reducing a side spray of water near the transom. Performance strakes are formed within the hull with each extending from an aft position rearwardly to the transom. An elliptical shaped dispersion tunnel formed along the keel within an aft most portion of the hull extends through the transom and provides a desirable wake shape.

Abstract: A water sports performance boat includes a hull having a sharpened angle keel for cutting into the water. Reverse chines are carried on port and starboard sides and extending from a forward portion of the hull to an aft portion for inducing a lifting of the bow at generally low boat speeds and for providing a stabilizing effect. Port and starboard spray pockets are located at the aft portion of the hull for reducing a side spray of water near the transom. Performance strakes are formed within the hull with each extending from an aft position rearwardly to the transom. An elliptical shaped dispersion tunnel formed along the keel within an aft most portion of the hull extends through the transom and provides a desirable wake shape.

Abstract: A method for improving the performance of a wakeboard performer being towed by a vessel having a bow, stern, opposing gunnels and an operator station comprises fitting a skeletal towing frame to the vessel with first, second and third spaced supports attached on opposite sides of the vessel and coupling the upper extremities thereof together with a horizontal bridging portion, to which is fitted a tow rope attachment point.

Abstract: A water sports performance boat includes a hull having a sharpened angle keel for cutting into the water. Reverse chines are carried on port and starboard sides and extending from a forward portion of the hull to an aft portion for inducing a lifting of the bow at generally low boat speeds and for providing a stabilizing effect. Port and starboard spray pockets are located at the aft portion of the hull for reducing a side spray of water near the transom. Performance strakes are formed within the hull with each extending from an aft position rearwardly to the transom. An elliptical shaped dispersion tunnel formed along the keel within an aft most portion of the hull extends through the transom and provides a desirable wake shape.

Abstract: The aerial performance characteristics of a performer using a water sport implement such as a wakeboard is enhanced by a towing apparatus which includes vertical supports rigidly attached starboard and port side gunwales of the vessel at a location generally outboard an operator station. A frame including rigid U-shaped bridging supports transversely extends across the beam of the vessel. The frame is pivotally fitted to a forward portion of the vertical supports for rotation from an operating position to a stored position on the deck of the vessel. The U-shaped bridging supports extend substantially above the level of the operator station. One of the U-shaped bridging supports is readily removably attached to the vertical support. A ball assembly is carried by detachable ends of the frame, while a socket assembly is carried by the vertical support. A shaft extends through the socket and has one end threaded for engaging a threaded bore of the ball.

Abstract: The aerial performance characteristics of a performer using a water sport implement such as a wakeboard is enhanced by a towing apparatus which includes vertical supports rigidly attached starboard and port side gunwales of the vessel at a location generally outboard an operator station. A frame including rigid U-shaped bridging supports transversely extends across the beam of the vessel. The frame is pivotally fitted to a forward portion of the vertical supports for rotation from an operating position to a stored position on the deck of the vessel. The U-shaped bridging supports extend substantially above the level of the operator station. One of the U-shaped bridging supports is readily removably attached to the vertical support. A ball assembly is carried by detachable ends of the frame, while a socket assembly is carried by the vertical support. A shaft extends through the socket and has one end threaded for engaging a threaded bore of the ball.

Abstract: Aerial characteristics in a wakeboard performance are improved with a vessel having a skeletal frame including starboard and port rigid vertical support structures fitted to opposing sides of the vessel with a horizontal bridging portion extending between the structures for attaching a tow rope. Further, ballast tanks are fitted onboard and only aft amidships of the vessel, at or above the waterline. The ballast tanks are filled with water during movement of the vessel using a water scoop which extracts water from the body of water upon which the vessel operates and forces the water into the ballast tanks during movement of the vessel through the body of water, weighting down the stern, thus lowering the vessel into the body of water and affecting the wake created by the vessel. By controlling the amount of water carried by the tanks, a desirable wake is formed for use by the performer. The weighting is controlled by controlling air venting to the ballast tanks.

Abstract: The aerial performance characteristics of a performer using a water sport implement such as a wakeboard, and being towed by a vessel while maintaining stability of the vessel includes a first relatively rigid vertical support fitted to one side of the, a second relatively rigid vertical support fitted structure to an opposing side, and a horizontal bridging portion extending between upper extremities of the first and second vertically extending supports, at a height substantially above a level of the operator station for the vessel. A tow rope is attached to the horizontally extending bridging portion for towing the performer from the horizontally extending bridging portion while operating the vessel in a body of water. By pivotally attaching the first and second supports to the respective sides of the vessel, they can be rotated downwardly so that the vessel may pass underneath a bridge or into a boat house.

Abstract: A marine fuel tank includes a "sump" tank compartment. The sump tank compartment projects from and below a main fuel tank compartment. A bottom cover plate, covering the sump, has a large hole in its center in communication with one end of a connection tube. The bottom cover plate for the sump also includes two small holes directly in front of and behind the connection tube, aligned with each other in a direction of travel. These holes allow fuel to move from the main fuel tank compartment of the fuel tank into the sump tank compartment. As the main fuel tank compartment is filled with fuel, the fuel flows to the sump tank compartment by gravity feed through the holes in the cover plate of the sump tank compartment. A fuel pickup tube extends through the connection tube and into the sump tank compartment and its free end is free to move inside the sump tank compartment as moved by the dynamic acceleration forces acting on the fuel pickup tube.

Abstract: The aerial performance characteristics of a performer using a water sport implement such as a wakeboard, and being towed by a vessel while maintaining stability of the vessel includes a first relatively rigid vertical support fitted to one side of the, a second relatively rigid vertical support fitted structure to an opposing side, and a horizontal bridging portion extending between upper extremities of the first and second vertically extending supports, at a height substantially above a level of the operator station for the vessel. A tow rope is attached to the horizontally extending bridging portion for towing the performer from the horizontally extending bridging portion while operating the vessel in a body of water. By pivotally attaching the first and second supports to the respective sides of the vessel, they can be rotated downwardly so that the vessel may pass underneath a bridge or into a boat house.