One of my dstaff was at SIXS at the time
This was me coming into Six South. There were two 172's orbiting to the west of six south due to clearance denial. The radio was just full of congestion. I managed to get a inbound call in over six south. Had I been given clearance denial I would have had a few options. Either turn to the west where there was two 172's orbiting (I only had one in sight at the time) into the setting sun (1700), turn east towards the busy Armadale area and into potential outbound traffic or do a 180, again into potential oncoming traffic. Not a very nice situation to be in. Thank god the person sitting next to me was a 13000 hour pilot helping me keep a look out.
I seriously believe its only a matter of time before there is an accident. Something needs to be done immediately to reverse the decision to cap the numbers allowed in the circuit.