Good job and wish I had read this a couple of days ago. We went up to Emu Rocks for the first time on Sunday and, whilst I enjoyed the climbing, I did bitch and moan a bit about the rap setup! The various guides had a few different descriptions of slung bollards and rings. The only thing we found was about 4 meters to climbers left from where you top out Sahara. Its was an oldish looking length of climbing rope threaded behind a bollard quite a way (3m?) back from the edge. I augmented with a long sling of mine and a locking biner to thread the rope through and we rapped off that. From there it's a full 50m to the ground, maybe a touch more. Then we got the ropes well stuck trying to pull them.