A fin for a slalom water ski includes a planar body with a convex leading edge and a slot proximate such leading edge. The slot has an arcuate front or leading edge and a wavy rear edge defined by alternating crests and troughs or projections which allow the fin to be smaller without compromising its ability to support ski acceleration. The smaller size allows the ski to be turned more easily. A line of small holes extending in a row proximate the leading edge of the fin body can achieve the same result.

A fin for a slalom water ski includes a planar body with a convex leading edge and a slot proximate such leading edge. The slot has an arcuate front or leading edge and a wavy rear edge defined by alternating crests and troughs or projections which allow the fin to be smaller without compromising its ability to support ski acceleration. The smaller size allows the ski to be turned more easily. A line of small holes extending in a row proximate the leading edge of the fin body can achieve the same result.

A jewelry display includes a ferromagnetic planar substrate and a bracket configured to be attached to a wall. The bracket has at least one wall engagement surface disposed along an inner surface and at least one ferromagnetic planar substrate engagement surface disposed along an outer surface. An adhesive backed non-slip covering adhesively attaches to the substrate engagement surface. At least one bracket magnet is disposed on the inner surface of the bracket. A plurality of jewelry fixtures are configured to be removably attached to the front surface of the ferromagnetic planar substrate, each jewelry fixture having at least one permanent fixture magnet and a jewelry holding structure, where the at least one permanent fixture magnet of each jewelry fixture is magnetically attracted to the ferromagnetic planar substrate.

There is provided an assembleable aquaboard made of fiber-reinforced plastic (FRP), including: a first plate having a first T-shaped slot on the top surface and a second T-shaped slot on the right side surface, a second plate having a third T-shaped slot on the top surface and a fourth T-shaped slot on the right side surface; a third plate having a fifth T-shaped slot on the top surface, a sixth T-shaped slot on the right side surface; a fourth plate having a seventh T-shaped slot on the top surface and an eighth T-shaped slot on the left side surface; a first T-shaped connector to connect the first and the third plates; a second T-shaped to connect the second and the fourth plates; and a first I-beam connector to connect the first plate, the second, the third plate and the fourth plate to form the assembleable aquaboard.

A measurement device for use with a traction pad. The measurement device may include a first container configured to hold a sensor, the first container including an opening connecting an inner side of the first container with an outer side, a second container configured to hold a processor, a watertight passage between the first and second containers which allows a signal communication between the sensor and the processor, a lid configured to seal the first and second containers, a power supply configured to supply power to the processor, and a switch disposed on an end of the measurement device which is accessible to a user.

A personal watercraft comprises a body including a deck; and a seat disposed on the deck at a location that is forward of a rear end of the deck, wherein the deck includes a deck floor extending in a forward and rearward direction and in a rightward and leftward direction, at a location that is lateral of the seat, and wherein when viewed from a side, inclined parts which are inclined in an upward direction from a front to a rear, are provided in regions of the deck floor, the regions vertically overlapping with a portion of the seat, the portion being rearward of a center of the seat in the forward and rearward direction.

A personal watercraft comprises a body including a deck; and a seat disposed on the deck at a location that is forward of a rear end of the deck, wherein the deck includes a deck floor extending in a forward and rearward direction and in a rightward and leftward direction, at a location that is lateral of the seat, and wherein when viewed from a side, inclined parts which are inclined in an upward direction from a front to a rear, are provided in regions of the deck floor, the regions vertically overlapping with a portion of the seat, the portion being rearward of a center of the seat in the forward and rearward direction.

A motorized, steerable, electrically-operated personal watercraft that includes a hull with a bow, stern, top deck surface, underside surface, and a support and steering console. The deck is configured to allow a user to lie prone on the deck with the user's chest located on or proximate the console. There are left and right steering control devices located at the left and right of the console, respectively. The steering control devices are configured to be manipulated by the left and right hands of the user. Motive power and steering are both provided through an electrically-powered water jet, which may be but need not be located at the stern. The water jet is mounted to a fixture that is configured such that the outlet nozzle of the jet can be turned left and right, in order to steer the craft to the left and right. Jet nozzle steering is accomplished by manipulation of the left and right steering controls. User-operable kill switches also located at the left and right of the console must be operated in order to operate the jet.

Boat propulsion assemblies are provided that can include: a water pump operatively coupled to a first conduit in fluid communication with one portion of a hull of the boat; and a water source in fluid communication with the water pump. Methods for propelling a boat are also provided that can include using a water pump to express water outwardly from one portion of a hull and propelling the boat. Propulsion assemblies may also be configured with: a first conduit extending from a first portion of a hull of the boat to a second portion of the hull of the boat; and a first pump operatively aligned along the first conduit and configured to convey water between the first and second portions of the hull of the boat. Methods for propelling a boat can also include: intaking water at a first portion of the hull of the boat; conveying the water to a second portion of the hull of the boat; and expressing the water at the second portion of the hull to propel the boat. Boat propulsion assemblies of the present disclosure can also include: an underwater member moveable in relation to the boat; and a conduit operably engaged with the member and configured to express water from a portion of the member. Methods for propelling a boat can additionally include expressing water from an underwater member to move the boat.

Boat propulsion assemblies are provided that can include: a water pump operatively coupled to a first conduit in fluid communication with one portion of a hull of the boat; and a water source in fluid communication with the water pump. Methods for propelling a boat are also provided that can include using a water pump to express water outwardly from one portion of a hull and propelling the boat. Propulsion assemblies may also be configured with: a first conduit extending from a first portion of a hull of the boat to a second portion of the hull of the boat; and a first pump operatively aligned along the first conduit and configured to convey water between the first and second portions of the hull of the boat. Methods for propelling a boat can also include: intaking water at a first portion of the hull of the boat; conveying the water to a second portion of the hull of the boat; and expressing the water at the second portion of the hull to propel the boat. Boat propulsion assemblies of the present disclosure can also include: an underwater member moveable in relation to the boat; and a conduit operably engaged with the member and configured to express water from a portion of the member. Methods for propelling a boat can additionally include expressing water from an underwater member to move the boat.