I've lived in a mobile home in upstate NY {cold and snowy} for the past 12 years. Mine is bolted to a wood {2x12"} platform that in turn is bolted to concrete pylons that go 4' into the ground. It ain't goin nowhere. It is situated so the water line comes straight out of the ground and right up into the trailer under the kitchen sink. From there all the water lines from the kitchen to the hot water tank to the bathroom run inside the trailer so we only have the 3' of exposed line. That line has a heat tape on it and we've not had any problems with frozen water lines down to 20 below. We heated the place entirely with a wood stove for the first couple of winters and it took 12-13 face cords of hardwood. One winter we heated entirely with the furnace {kero because the tank is outdoors} and it took two full tanks {275 gal.} to get us through. Pretty darn cheap to heat compared to my old 2 story 1800 sq. foot house.
