One video online has someone setting them off in what looks like a backyard, and at least two collide with the roof of the house, and one appears to get stuck!
There is also other footage of them being set off at a wedding, one very nearly drifting into the top of a marquee!
A large launching area is essential.
Yes I agree. Common sense tells us all this but unfortunately, there are people out there with very little sense at all and they bumble through life leaving the rest of us to suffer their consequences. I can feel a rant coming on so I'll get back on topic.
About the wire fuel cell frame: I am researching a form of iron which is designed to rust quickly and breakdown over a period of a few weeks. I have only found a small snippet of info. This method could prove problematic when addressing freight and storage. I need to look into it more. I'll put my findings on here as and when.
Another idea which has just struck me now is using glass fibers or strung out fiberglass. I have seen it in woven rope form before so it's possible to have it as thin as cotton yarn. It's fire proof and will be of less danger to animals, environment and agricultural machinery etc.
This could be a real solution but it does need testing.