hey guys it is almost that time sorry to say. I will be taking the boat out first week of Nov. this is the first boat I have owned with a water system. How should I winterize it. I was told to drain the water and add antifreeze to fill about half the tank-- then open each sink to let the antifreeze flow through each line -- then shut off and that is it. does that sound right???.how about the fill line up to the deck should I leave that open like I would a outside spigot at my house, so the moisture does not bulid up and freeze??? The head is a porta potti type with a pump out-I thought I would just fill with antifreeze and leave-- but again how about the pump out hose to the deck -leave open or closed??<br /><br />Thanks<br />Cool It