Chase Cullinan wrote a review of Eagles Nest Outfitters SlapStrap Pro - 20mm - Pair on April 12, 2010
Slap straps are awesome. I can literally set up my doublenest in under 60 seconds with them. I have blown out 2 loops on them though. Each time was from having 3 ppl in the hammock. The weight rating is NOT a recommendation. I had 2 girls who only weighed maybe 110 each in it with me and it was fine for a few minutes and BOOM. You could absolutely hang without them. 2 good lengths of rope and a basic knowledge of some knots and bends and you'll be fine. These sure are convenient though.