I strongly suggest buying a multi fuel stove for fly in hunts. That way you can even use AV gas.
Its not a jetboil but the trade off to getting somewhere withotu jetboil fuel, even if promised it was tehre....
I"ve heard of folks stashing a small survival canister or 2-3 for things like jetboil/pocket rocket say in the bottom of boots, even havign luggage marked as searched, but fuel still there.
At least thats what I"ve heard...