what is the advantage of using ring buckle system vs using a good knot like a bowline? Adjustability? Why can't you simply use the needed suspension rope length and tie off to the tree webbing/tree huggers with a bowline? I may be missing the point so please help me. The only true advantage I see is if you need to get the suspension line really taut, because you really cant do this with most knots including bowline. A truckers hitch would work, but it would really be hard to untie after loading the hammock.