The Nacra20 is just a good starting point for this class. I don't think you will see people building boats to this formula spec for years. But over time yes people will build new boats. And I don't see a reason to have 400 pound boats. The nacra20 is an awesome boat and I love mine, but at the same time I see the numbers of n20's out there dropping off. Unless we all want to spend 35k on an f20c or move to 18 foot boats then we need an f20na class. I believe it will also keep the n20 alive for a few more years.