So, the weather says it's actually going to hit 2 degrees F this Monday in Texas. That's really a fluke, and I've been fine without skirting the rig so far. I'd hesitate to skirt it for just one day of that, as I plan to do some weekend travelling here anyway. My plan is to not skirt the rig and keep the fireplace off. That way I'll heat with the furnace only so as to keep the water lines heated.

Is this a bad plan, or do you think the water lines will survive it?