don't know all the things you can do ,but here is some things i do . # 1 and never forget is to run the engine on the muffs and spray fogging oil into the carbs til if floods and dies. then pull the plugs and spray more oil into the cylinders, then replace plugs . this step is very important . if the main seals on the crank shaft are not lubricated they can seize to the crank and be torn up on the spring startup. very expensive repair!!. do not use motor cover on engine it will cause moisture to condense in the motor. a general oil and grease of everything that might rust or corrode over the winter. if you have rodents that might want to live in the boat , peppermint oil an cotton ball in every compartment will keep them out . and don't forget the trailer.
