I remember my first time out. I set my hammock up between two trees just fine. Then realized my tarp wouldn't fit between them as they were too close together. (Lesson learned; set up tarp first).
Then I pick another pair of trees and attached my straps. I then proceeded toward the second tree, while letting the straps and hammock play out of my Bishop's bag, and was still 3' from the tree when I ran out of slack. (Lesson finally learned; pace off the distance between trees before removing backpack).
It's no wonder I slept so well that first night. I was dog tired from setting up my hammock!