For anyone thats interested these are my home made assymetrical directional speed boards. These types of boards are designed for minimum drag and maximum control at 40 + knts. The rocker is basicly flat from the tail to the front foot strap and some nose lift from there. Flex is a bit stiffer than a normal twin tip.
Two boards are needed, one for right foot back and one for left foot back. They are ridden backwards to get back upwind to start a run and sailed approx. 130 degrees off the wind.
PS. Warning, speed kiting is an addictive buzz