People who do this for a living (ie, biologists, naturalists, and other scientists who go out to jungles and live in the tree tops) either have a large safety net, or sleep with a harness hooked to a nearby branch.
my hammock gear weights total: 2430g (~86oz)
Winter: total 2521 (~89oz)
(see my profile for detailed weights)
gram counter, not gram weenie!