Motor Vehicle, Mobile Home, Off- Highway or Vessel Description. Year. Use this form to gather necessary information when you sell your vehicle or vessel.Access bill of sale form templates and learn how to transfer ownership of vehicles, boats, firearms, and other high-value personal items in Washington. Learn about Florida Bill of Sale requirements. Get forms and templates to document the sale of items such as cars, boats, horses, firearms, and more. It is signed as the last step in the sales process after both parties have received possession of the exchange. This Florida Trailer Bill of Sale form is essential for transferring ownership of a trailer. It includes all necessary seller and buyer information. First the seller fills out the Notice of Sale form and signs it. Then, the buyer reviews the form and signs it.