I use my boat all winter except for Dec & Jan. I use a quick & easy winterizing method. I suck organic (Sierra) antifreeze from a bucket thru headphones and into the motor. I twisted together some hose fittings ($5) so I can switch from garden hose water (after the motor is warmed up) to bucket fluid. NO TOOLS REQUIRED! That way, the boats is always ready to go. Also, I think that the antifreeze is good to get on the raw water surfaces of the FWC system and the manifolds.