Luiz, I think your systematic approach is good, but you should also make sure first that others who might work with you (and I'm purely an observer here) agree with your basic premise that the objective is to compete in the same market as the Optimist. I'm not sure that that's what others here are thinking. 14' is a huge amount of boat for a kid of the size that sails an Optimist. I think you also need to develop a clear understanding of how the concept relates to possible F12 development. Regardless of whether you are trying to complement or compete with it, people should know what the intention is.