My neighbor has a lot of that black plastic pipe ran down through the field, fittings every so often (can never remember the name, but similar to fuel hose fittings, with the wings/levers), and drags his skid to the first position, uncouples pipe, couples in water tank. When it's time to move, uncouples tank, couples pipe back together, pulls tank (and mineral feeder, on same skid permanently mounted) to next position, repeat. I think when it gets cold he just turns them loose and they water at waterers. The black plastic stays out year round, so I'm told. I would assume he would drain it, but he might not. lol Idk how much UV that pipe can stand either. It's something I've thought about to reach a spot here that otherwise would require a lane with another fence if the creek didn't have water.