Patent ID: 6551158
Filing Date: 2003-04-22
Classification: B63B

Abstract:
In a water sports device for supporting a seated human rider while the rider and the device are towed behind a powered water craft, the device including an elongated board having a front end and a back end to which is secured a seat for supporting the buttocks of the rider in a position spaced from and roughly centered above the back one-third of the board, a holder for securing the feet of the rider over the top of the board secured to the board spaced at least about two feet toward the front end of the board from the seat, an elongated hydrofoil extends downward from the board, front and rear planing blades carried by an arm which is generally parallel to the board, said arm being secured to the hydrofoil and spaced from the board, so that the blades are generally parallel to the board, the planing blades provide essentially no lift when the board is horizontal;the improvement wherein the distance between the front and rear planing blades is manually adjustable fore and aft by adjustment of the position of the rear blade relative to the front blade so that the advanced rider can adjust the rear blade forward to make the device more responsive and thereby create higher jumps, and the less experienced rider can adjust the rear blade further to the rear of the front blade to make the device less responsive.