The sails were first generation sails and the plan has evolved over the past few years. They did have some conditions that they were very fast in. The sails will continue to change and develop. Unlike a mast or hulls, the sails can (and are expected) to be replaced every few years or so - a great chance to stay competitive!!!

Additionally, a more knowledgable person could have gotten more out of the sails than I was able to.