Last year I went boondocking on a mountain top in North Central Pennsylvania. It got down into the single digits both nights and never above freezing during the days. Now the colder it gets, the less pressure you’ll get from your propane tanks, especially if the tanks aren’t full. By the second night the tanks were about at half so even less pressure. I ended up using my buddy heater with my emergency 1lbs bottles (nice to have a backup). Also, I was killing my batteries because the furnace was running constantly since the inside temperature was never getting high enough for the thermostat to turn off the furnace. I figure the only way I could have kept the tanks any warmer would have been to insulate them with a blanket and perhaps put a skirt on the front bunkend to cut back on the wind chill. Hopefully will be getting out a few times this Winter but not quite to the “mountain man” extreme level of last year. I’ll stick to state parks and spring for electric sites. I’ve seen a few insulated blankets but the use AC power. Others look to be little more than the vinyl tank covers that come with new campers and be purchased at any RV store. I’m thinking a wrap and bunkend skirt would be my best option. What do you think?