No Pink Stuff in the water system
I disconnect the outlet on the water tank, the boiler valve on the water heater and let them drain into the bilge. Like Mort I open the inspection ports on the tank and sponge. Pump is unhooked and turned on to empty. All faucets are opened and I use compressed air to blow out the lines. Last year I didn't remove the system filter I have before the pump and even with applying compressed air water remained in it, froze and cracked the housing. This year it will be removed and stored inside out of the cold. I have a bypass set up between the engine cooling water thru hull and the fresh water pump for winterizing. I open the drain on the engine muffler and let that water drain to the bilge also. I replace the drain plug then I close the thru hull and open the bypass. I attach a hose to the bypass, the other end goes in a bucket with three gallons of eco friendly antifreeze and run the engine until pure antifreeze is coming out of the exhaust. Aren't you warm climate folks glad you don't have to go through this every year after a much too short sailing season.
RebaGee gets hauled next Monday. The sails and boom have been removed. On her trailer she will go, the mast will come down and off to the shed she will go for another winter. A winter filled with all sorts of projects which we hope will be completed before she gets wet again next spring. There is the proper mast to rig, sails to be recut, new cushions to be made, etc.