Abstract: Boats are weatherized for temporary storage, as over winter, by enclosing the deck and superstructure with a heat shrunk unitary plastic film. Tie lines terminating in loops are hung from the rub rail or other deck level attachment and extend a portion of the distance between the deck and water line. Bridge straps are run from bow to stern and the boat is draped with a single plastic film of sufficient size to extend below the tie line loops, a tie-down strap is passed through the loops to tightly secure the film about the boat hull and the entire plastic film is subjected to heat sufficient to shrink the film and produce a tight and taut membraneous cover.