In reply to Tim Sparrow & John Alcock:
I know (fairly well) the guy who made the swing. Back in May 1990.
He wouldn't do anything so silly nowadays, allegedly.
The extra loading was discussed ... or maybe it was discussed afterwards in the pub... who knows it was 23 years ago. I think the stakes (a number were rigged together) were given a kick as a test, lol. The set up was clearly strong enough, but the safety margin could be questioned.
More questionable (looking back at the old photos), was the red Ron Hills and purple fleece combo.
We'd been in the Leap earlier in the day doing the The Beast, Shape up & Strap Up, so some climbing was also done.