I am a club member, a USSailing member and an ISAF member for those reasons. The only reason for asking about NAMSA is to get those numbers under one entity for the purposes of setting goals, an agenda and an umbrella which to organize from. If USSailing is it and it represents all of us, then so be it. I remember earlier in this thread it being suggested that you join stating that you are a multihull sailor. I looked for that on the site and realized though the multihull council exists, there is no place online to choose multihull as an option.