RE: How do you keep a tent warm at 11,000 ft ?
Are you talking about keeping the tent warm during the night when you slept or just when you were in from hunting? I have never been lucky enough to hunt at 11,000 ft with heat of any kind in my tent, so unfortunately I can't help you unless you slept cold. While I have not slept in a heated tent, I have never slept cold, because I have made it a priority to have a quality sleeping bag. Usually take my 0 rated polarguard 3-D bag to that kind of altitude. I also sleep on a thermarest pad. Equally important for not sleeping cold. There is nothing more miserable than sleeping cold in the moutains. Been there, done that. Not sure I have helped. Hopefully someone else can.