Mobile Home, Off-Highway Vehicle or Vessel. General Bill of Sale – This form is generally used for the sale, purchase or trade of personal items.Download: PDF, MS Word, OpenDocument. How do I fill this out? To fill out the Florida Trailer Bill of Sale, gather all necessary information about the seller, buyer, and trailer. The seller and the buyer must fill out sections 1, 2 (if applicable), and section 3 to finalize the deal. Motor vehicles, vessels, mobile homes and trailers must be registered at the point of purchase and a certificate of title issued as proof of ownership. Use the downloadable forms below to print and fill out prior to your appointment for faster service. Are you ready to buy a car? Follow these steps to transfer a Florida title and avoid delays.