On the first videos, the way we usually tow, there is about 50 to 60 foot of tow line-a flag setup-and 10lb. fishing line. Also two releases, one at the tow plane and one at the glider.
On the last video, the glider is a slope combat plane with ailerons and elevator. My sons glider is so light that I was towing almost vertical. It was pretty much dragging dead weight up to the top and letting it go.[8D] I guess on the last video, we could have used much heavier line, but then if something happened how would we have gotten disconnected? But with the 6lb. test fishing line we can steer apart and break away. When running a break away line you have to learn to tow gently. A long time ago some of our friends had a pair go down because they couldn't break apart.
Why, even on our skydivers run a safety chute!
[link=http://www.rogue-eagles.com/joestagg/Weeble RCSkydiver drop.wmv]Weeble the Skydiver safety education drop.[/link]