The design and development of the RAPTOR Profile Spoiler is based on strict hydrodynamics. The upper surface is slightly greater than the lower surface. The effect/result is that the water flows faster over the top surface than over the bottom surface. This creates lift and pushes more forward edge of the ski into the water, especially after the apex of the turn, resulting in a better finish of the turn, greater stability and quicker acceleration. The tunneled channel at the end of the spoiler prevents the tail from washing out. The RAPTOR Profile Spoiler is patent pending .