Re: Document or register my vessel?
I've owned boats in California, some state registered and some documented. As long as you are not planning on going out of the country, it doesn't make much difference. California will reach out and get its taxes regardless.
The one good thing about documenting is you don't have to deal with the DMV. It took me over two hours to register a dinghy there, as the employees don't deal with boats very often and so they get confused. So if you go the State route for registration, try to pick a DMV that is closest to a marina, bring your bill of sale, and be ready to pay sales tax unless you have proof that you already paid the tax.