Walkabout article from February 1969 provides a good description of the summit walk. This was before the chain. It's still the same "on hands and knees" job these days especially as NSW NPWS have ripped out the chain. Just about everything NSW NPWS say about the summit walk is a lie!
Our mountains belong to all of us. The Right to Climb them and bask in their views that inspire awe and wonder is as old as the human genome. This long-established cultural tradition is under threat by a small group of bureaucrats determined to impose their way on the rest of the world. It is right to Climb because we have the Right to climb. If you don’t exercise your rights you lose them. Don't let petty nanny state bureaucrats take them away.