I particularly liked the shelter suggestions. I carry a Coghlan's Survival Bag. It can be used as an immediate shelter; hop in and pull it over your head. It can be set up as a closed end tube tent. I liked the idea of building a debris hut and having the bag inside. Also having some hot rocks inside is a great idea! I have read of a fire bed but not of semi hot rocks used above ground to heat a debris hut. I also liked the suggestion of using a space blanket to line the top of a debris hut and having the shiny side inside to reflect heat from your body or a fire. I wonder if the heatsheet works as well as a space blanket for this application?

Good info!