Re: USCG Certificate of Documentation
It only costs about $100 to document your boat and that is a one time fee. Renewals are free.
If you live in a state that doesn't require state registration of a documented boat, it will save you some money. I live in VA that doesn't require it. I'm on my 3rd documented boat and have never paid for registration.
Also, love not having state numbers plastered on my bow.