Tim,
Mine is always going to be simple, minimalist. I rarely use a tree hugger strap....instead wrapping multiple raps of suspension line around the tree. No rings here, either. The beener is to allow for use of a truckers hitch (when using a hugger strap) and/or to hang my pack. Whoopie slings are interesting and I might go there someday. West Marine sells Amsteel Blue. It's nice see side by side comparisons of different lines.