I de-winterized a couple weeks ago as well, and enjoyed one heck of a fun camping weekend over St. Patrick's day weekend.
Yesterday I happened to have my coach in the driveway after returning from the factory to have new axles installed. It got down to 25 here but nothing froze, as I set the furnace at 45 degrees or so and that was enough to keep everything from freezing.
The 10 day forecast looks safe, and I'm pretty hopeful that by then we are out of the woods.
Jeff, Laurie, + kids
Three time former Sunline owner
2011 Big Horn 3670RL Fifth Wheel
2012 Chevrolet Silverado 3500HD D/A DRW, Classy Chassis Conversion, aka "Garage Queen II"
Hensley Trailersaver BD3 Air Hitch