[sp332]

Just put the hydrogen in a balloon and it will carry itself.

[dylan604]

Just remember, the flame from hydrogen is clear and very hard to see until it catches other things on fire. At that point, it's well past too late

[toast0]

Just need a longer string for the balloon and it'll be ok. And hike in places with less trees (although, after a few mishaps, the trails you frequent will have less trees, too).