Thanks for all the replies. My coach has an option called Prevent-a-Freeze, which essentially is a two way, electrically operated valve and a tank of about 2 1/2 gallon capacity, located close to the water pump. One input to the valve comes from fresh water supply, and other comes from the tank. The output goes to the water pump. A switch on outside of service bay has two positions, Normal and Winterize. When the switch is on Winterize, it moves the two way valve to pull from the tank. All one does to Winterize is fill the tank, set the switch to Winterize, and go through the processes discussed above to put pink antifreeze through all the water lines. The only problem, 2 1/2 gallons is not enough, and getting pink antifreeze into the tank is a pain! But I did it multiple times (I won't describe where the pink antifreeze goes if you forget to close the low water drains, but I can say the ground in front of my storage building shouldn't freeze for a few days!). I used a drill operated pump to move antifreeze from gallon bottles to the tank. I think the hose idea, or a hose that bypasses the tank and goes to outside where I could use 5 gallon bucket, would be simpler...
Now, for others, here is what I did for washer and frig ice maker. For washer, I wanted to make sure antifreeze was in the hoses and valves in washer. So with pump on, I turned washer on normal cycle until I had about 1/2 gallon of antifreeze in the tub. Then I stopped washer, set it to spin, and ran until the antifreeze was out of the tub. I think that covers the washer. For the ice maker, the manual said to disconnect the line from water supply and the line that goes up to ice maker at the solenoid. Before removing water supply line (I didn't think the ground needed more antifreeze!), I turned off a valve close to water pump that feeds the ice maker. Then with help, I turned on the water pump, opened the frig water supply valve, then turned the valve off when my friend said pink antifreeze was coming out water supply at frig. I blew water out of water line to ice maker. This process should protect ice maker supply lines and solenoid.
I should have antifreeze in all the lines, traps, etc. now!
Also, I saw a post about Aqua Hot that said it could be used with pink antifreeze in the water lines. This was good to hear, since I may want to heat the coach before I de-winterize it.
THANKS again for all the posts!