I set here reading all about signaling and having this and that with you to get attention at night.
I think most everyone agrees that the mag strikers are with us.
I propose an experiment. This will require the following items.
(1) Mag striker, Knife.
(2) A friend.
(3) Dark night.
Separate your self from your friend and get aways a away and strike an arc. Cell phones would be handy as you increase the distance, so you can stay informed.
To add a little more fun to the mix, add your reflective thermal blanket. Strike in front of the blanket. Think of the possibilities for signaling an aircraft. I've thought in the past of using my blanket as a signal mirror for day light rescue, why not use the blanket for night time reflector for an arc light?
Just running off at the mouth, but got to wondering?