I just went through this for my 235, sort of. The bank I first dealt with wanted coast guard documentation. I knew nothing about it. Dealer called and said that it was crazy, especially for where we live (Michigan) and size of boat. We ended up not doing it, as not having MC numbers in Michigan would have likely had me getting pulled over constantly, likely. Went through a different bank and spoke with another broker who did not think it was big enough to be able to be documented. But he wasn't sure.