I bought sixteen descender rings (supposedly SMC) at ~$4 each; they all became deformed after several hangs.. What a dissapointment!
Why not make a rope loop at each end of your hammock just large enough for the webbing to slide through, pull it through and tie a slipknot? No more oblong rings, costs $16 less, less hassle for setup/takedown (you don't have to pull the end towards the tree to separate the rings), no chances of slipping if the loop is small enough, less weight/hardware, and it's still very quick and easy to adjust.
Am I the only one who has thought of this, or am I missing something? Has anyone else ended up with deformed or broken rings?