In reply to jon:
There's a multi-authored piece in the June/July 1969 edition of Rocksport describing the first ascent of St John's Head on Hoy, which involved a certain Al of this parish. From Leo Dickinson:
"The last day went fine. Ed [Drummond] found some artificial climbing and together with Ben Campbell-Kelly reached the top just before dark. Al got bored sitting on a ledge by himself and so decided to prussik up the only rope in sight.This was all very well except that the other end was attached to my waist and I was halfway up another prussik rope. Prussiking up a rope, trailing a 200ft rope on which someone else is also prussiking, makes life rather tiresome. Al was persuaded to vacate the rope."
Excellent!