I mentioned this in another thread,
Recently, I found a way of handling suspension that works great and costs less. Some people like the rings because it looks fashionable, but I make big hammocks so I like to minimize the weight when possible.
It's really simple; instead of attaching rings, place a knot at the end of the rope for ~ a 1.5" loop, then run the webbing through it and tie a slipknot.
There's no issue of trouble spreading apart the rings when the hammock is pulled tight, but there's a similar problem occasionally with the knot becoming too tight. From my experience, it's less of a problem than the tight ring suspension problem, and takedown is super-fast! If the knot becomes too tight, you can tie something heavy to the end of the webbing and yank the knot free, or even prevent the possibility by using a small branch as a toggle. Just make sure to tie the knot neatly.
When I find my thread, I will post some pictures and link to it from here.. This is honestly how I prefer my suspension, and it can problably be combined with whoopie slings if you skip tying a knot in the rope first.
It's amazing, a simple slipknot seems to work for me in just about every application.