Headchange, as I 'm a newbie, I have no real experience but have made a tablecloth hammock and tried 2 suspension types. When I hear single line suspension, I think of a single line connecting to the connection points at the tree straps. But when I look at the pics I see that you have double lines connecting to each descending ring and a single line extending between the rings. There appears to be little material, thus weight difference between your single line and whoppies with a fixed ridgeline.
I don't have amsteel yet but have installed a couple of D rings in my office to try out hanging. So far I've slept in a hammock for the last 7 days. And after changing to my version of the single line, I had the best nights rest yet. I only had utility cord (REI) rated @ 400#, so I doubled it in consideration of breakage at the knots, and attached one end via larks head to one D ring, and snugged the other end thru a carabiner with a few overlapping wraps with a slippery half hitch. The span between the D rings is 12'2", the hammock is 116" and the distance between the rings is 100". I used Grizz's simple wrap technique to secure the rings on the single line and from the rings to the larks head on the whipping is 5.25". My D rings in the walls are @ 5' so I can't get the descender rings much closer than 98" before I'm on the ground. Boy I wished I'd put those higher!
My questions are:
1) Why is there a need to secure the single line at the descender rings? To stay dry under the tarp for adjustment in rain?
2) What is the "normal" or average height for the tree strap since the 5' mark is putting me so close to the ground?
3) How much does the amsteel stretch? The utility cord seems to have a good bit of stretch and I wanted to see what to expect with amsteel.
4) When using the SLS do you secure the tarp above or below the tree straps? How far?
5) When selecting a tarp should I look for one that can be hung w/out a ridgeline to minimize the potential for water to follow the ridgeline under the tarp?
Thanks for the write up, I feel like I'm going to hammock school here!