RJ- sorry to respond so late but have been offline over a month. Irespond always to the "how to stay warm" threads as follows:
1. Native Americans/First Nationers/Inuit/Aleut would grease up well all over their bodies first. Plus my relatives who were on swim teams, especially during 6 a.m. winter midwestern team practices- a thin layer of petroleum jelly works well.
2. There's a reason why our forbears wore nightcaps. We lose up to 30% of our body heat thru the head. Hence the cowboy saying "if your feet get cold put on a hat!"
3. Layering works but READ your Labels and remember - COTTON KILLS! Any sort of linen, silk, or wool, with layers of artificial fibers- rayon, nylon, acrylic, polyester, etc! 2 shirts and 2 pairs pants plus socks!
4. Layer your bedding. I had a Celiant mattress cover, a bottom sheet that was a polyester fleece sheet, a top sheet that was a polyester fleece sheet, a polyester sheet blanket over that.
5. I bought an ornamental type shower curtain to use to wall off the mattress alcove, but haven't been successful in figuring out how to rig it up yet.
6. I found a 60 watt electric heater on Amazon. I'm comfy with that, and rarely use the 1000/1500 watt heater that came with the Snoozy.
7. We have 3 cats that travel with us and help keep us warm at night.

Remember 3 Dog Night is not just a rock group!