I don't run any stove at night no matter what the temp. A proper weight bag, insulated pad and quality cot make a very comfortable night if you are dry. Usually we have a wood stove for our hunt in Alaska. Next year we are going to be a ways above treeline and wood will be a premium. Actually working on a design for a vented propane heater for a fly in hunt. So far we have a prototype producing nearly 40,000 BTU at full throttle. Going to be doing some tests this winter with my 12 man tipi.
Mike