triple ring
Rigging a suspention ring to a hardpoint in this method allows it to be lowered as a whole, much like a rock climbing descender.
Start with the centerpoint of a rope.
Pass the bight through the ring.
Pass the ring through the bight.
Tighten the rope down making a ring hitch. Center on the tab of the ring, but if your ring doesn’t have a tab just tighten down.
Through the rest of the rope over the hardpoint (off the top of the frame in this pic) and pull it down making a double-bight.
Pass the bight through the ring (note: opposite the direction in the last step)
Pass the ring through the bight.
Tighten the rope down forming a second ring hitch over the top of the first one.
The tie will hold relatively stable at this point. All that is needed is to tidy it up some by using up the rest of the rope. Take the end and fold it making another double-bight.
Pass the bight through the ring (oposite of the last step).
Pass the ring through the bight.
Tighten the rope down forming a third ring hitch on top of the first two.
Any left over rope can be used up by warping around the support lines.
To lower the ring, undo the top most ring hitch. Depending on how much working load is on the ring, you may need to grip the rope end to keep it in place.
Where the free end of the rope enters the first ring hitch is where you need to pick at in order to lower the suspention ring. Pull slightly at this spot and the entire ring will inch down. This can be continued until your working load is safely back on the ground.