De winterize in Massachusetts or wait for warmer weather in the south

What exactly is your de-winterization process? 

I just close the fresh water tank drain, fill with water and run each tap until it comes out clear...usually just 2-3 gallons. I see no need to do anything ahead of time, just wait till the first night (when presumably, it will be warmer and you will be running the heat anyway)...then fill and go on with life.