What is this thing you call a cot?
The rubber bitch was a blow up air mattress which belonged in the same hall of fame as the GOER, M60A2 & Gamma Goat.
I slept on a foam pad laid on top of a shelter half on top of snow many times and was warm in my sleeping bag. But I also slept well with a poncho liner in a hammock. Hell one of my best nights sleep was sun freezing weather in the desert wearing a cold whether parka and wrapped in an oil soaked length of canvas.
Exhaustion is a wonderful sleep aid!