I ,Insert your name, Agree to sell the boat referenced below ( year, make, hull ID# and trailer Vin #) to , Insert his Name, on , Insert Date, for , Insert Price. I am selling the below refereced boat "As is " and agreed upon buy both the buyer and seller for the stated price above. I am releasing liabilty of the boat to the buyer on , insert date, and will provide the Pink Slip of the boat and trailer , when it is received by me from the bank holding the lein.
Have both parties sign and date this.
Its as simple as that. You can use this as your bill of sale, release of liability , and declaration of working status.