My range is 14' to 18' & I can go longer. Can't go much shorter because of the length of my tarp & after about 20' I too am (almost) on the ground.
I'm 5' 7" & usually hook my straps at about 8" to 1' above my head on the trees. at the short end of my hanging distance I can go about eye level, but not much lower.
As stated above, it takes a few practice runs to get it right, but then it's all easy to figure out.
When you have a backpack on, no matter where you are, you’re home.
PAIN is INEVITABLE. MISERY is OPTIONAL.