I've never used whoopies, so I can't comment on them. I use descender rings and cinch buckles with webbing straps. I find this system very simple to use. Here are some pictures of both. The rings are on my Trek Light hammock which is very similar to your ENO. I just larks headed them to the stock end cords. The cinch buckle is on my WB Traveler. I have since changed out the rings on the TL to cinch buckles from AHE. Switching this out was very simple with Paul's cinch buckle & chain link set. Hope this info helps you.