Better pumping ability due to softness and smoother distribution of depth throughout luff curve. Kai consciously used very high luff tension, which created strong sail foil tension in the lower third of the sail. This means a stiffer profile in the area where power is generated. The INDIVIDUAL.BATTEN.ANGLE ensures maximum stability in the lower power center. The battens are arranged at almost horizontal angles to take full advantage of stiffness. The extreme sail profile at the level of the rider was also consciously chosen since this area of the sail is responsible for maximum propulsion and therefore plays a decisive role for acceleration.
