 That's a smart idea. I never even thought of something like that. It works pretty well. And at the higher elevation, I've been at 10,000, and this still works pretty well. Enough to boil some water to pour in my mountain house. As far as estimation of how much fuel you'll need for that adventure, how do people do that? I've underestimated times in the past. We've built our own buddy burners out of wax and cardboard and things, and we were estimating it would take several meals and found out it did one.