I'm pretty impressed with the Rocket stoves that i've seen on the net for the efficiency and ease of use. Immediately I started looking to see if i could find a portable stove to use in my Arctic oven. I have a barrel stove that works great but, it's heavy as all get out. I haven't run across a rocket stove yet that looks big enough to heat the tent, yet light enough to be portable to take on float/hunting trips. Have any of you seen anything that fits the description? Also have any of you actually built your own (of any size)?