I was obsessed with those things at one time and built many different ones with different numbers of holes to see which one would boil water faster. I went on an elk hunt in the snow with a friend and found out they were finicky in the cold at high elevation. After a week of watching him crawl into his sleeping bag after eating his mountain house while I was still trying to get water to boil, I decided to buy a jet boil. I still thought the alcohol stoves were cool and would bring them on occasion. The last time I used it my pot of soup fell off and I almost set the hillside on fire. I threw it away after that.
They are fun to tinker with but not the best option when you want to eat and get to sleep when hunting, at least in my experience.
