I kept my BRe on a swinging mooring in an exposed spot. I used a plastic coated cable shackled to the tow ring, with a heavy clip at the free end. It worked fine but I did back it up with a bridle taken from both bow fairleads. The only hitch I had was due to my own carelessness in attaching a zinc plated shackle to the stainless ring at the free end. This disintegrated after only a few weeks, fortunately whilst I was busy clipping onto my mooring rather than after leaving the boat. Otherwise the set up was robust in some rough conditions.
