If you don't mind ripping stuff apart to fix hoses or valves next spring, but...... It's not that hard to do, half hour once you have done it once on a given trailer.
You do not have to put in anti freeze, you can just apply air pressure to the 'city water' input (after draining the tanks and as much as possible from the low water drain points, assuming you have them) and then blow out the water from the lines by opening the facets or valves. You can buy a blowout adapter at RV stores etc to hook up the compressor or air tank, about 40 pounds max is what most people use.
I'm sure there is a good explanation somewhere on the forums of the details of how to do it.
