May not be as easy as it looks
The CG is very, very particular about required documents. They cannot be copies as I recall, they must be originals. If your seller fails to cooperate and provide his originals like mine did, you might have problems. I am very glad that we had a title service handle it. It cost us $350 ten years ago. Getting the seller to cooperate and provide the originals took three or four months and a variety of threats from the title company. I was told later that the seller had better offers and wanted to back out of the deal but we had already paid in full for the boat. Sellers remorse like buyers remorse is a very real phenomenon and don't ever forget it.If it is a brand new boat purchased from a dealer, that shouldn't be a problem for you. If you are buying from an individual, make sure your ducks are in a row. Get original documents and don't settle for anything less before the final payment.A documented boat is much easier to encumber with a lien by anyone who wants to do so. It is more like selling a house. The possible lienholders include anyone who has a claim, is injured aboard or does work on the boat, utility companies, marinas, etc. A registered boat is therefore easier to sell as compared to a documented one.