CL16 centerboard

A customer came to use asking that we explore what can be done to make faster foils within the limits imposed by the CL16 class rules. We shortened the chord length while also maximizing the thickness, with the result that we were able to use a decent foil section. It is also slightly longer, to the maximum that the trunk will allow. Giving up a bit in area but with a far more efficient shape, this board should be able to generate the required lift at less drag than the origina