...well, I''m informed that we aren''t required to ''state register'' either. As we wont be in any particular state for any length of time we do not intend to state register.
So far, the only advantage I can see in documenting (and as I said, that would mean forming a company at significant expense) would be quicker / easier foreign port clearance proceedures. Our bill of sale is proof of joint ownership.
Am I missing something ?