Hahahahahaha while reading the first few lines I figured it must be really hot where you live.
basically you can cook on a stone here between 11 a. M. And 3 p. M. (It's hot!).
With this I confirmed it. I think it's hotter than where I live. You have a good profile to emerge victorious from a scenario like this.
Hahah okay hold on hold on... I haven't actually tried this but I'm sure it can work.. Maybe not a stone but a piece of medal could work... Right???
Hahahahaha try it before you go on the hike and let me know.