Responding to the wrapping the tree straps around the tree question:
My suggestion would be to only wrap the tree hugger around the tree one time, feed the amsteel (whoopie) through the other loop and attach the Dutch hook to the continuous loop. You are now using the tree stap as part of your suspension (which is fine). You may have to shorten your whoopies if the trees are closer together.
Only wrapping it once will also make it easier to raise or lower as you were asking.
So far as trees 10' apart. I believe 11' is the minimum I'd go on that Blackbird, and very minimum, for a good hang. With 6' slings you can certainly go much farther, and there appeared to be a lot of other trees in that image.
Hope this makes sense.
Afoot and light-hearted, I take to the open road,
Healthy, free, the world before me,
The long brown path before me, leading wherever I choose.
Last edited by ftroop94; 06-27-2012 at 18:08..