Ok so I've been hammocking for about a year now with my Eno Atlas straps. They're super adjustable and seem to be well made and easy to set up. However I have seen so many people here using whoopie slings and talking them up so much. I want to know exactly why they are so great, (besides weight). Also if I were to try them out what exactly would I need to add whoopies to my setup? I'm assuming it's the whoopie slings and some sort of webbing.