Excellent bit of detective work:-) You'd have been a while looking for it in Cork. It looks better in the more modern photo, just looked in the book and his photos were first published in 1984. I have just broken a personal taboo and written in my copy, identifying Bocan.
Now all we need to know is the location of that amazing bit of balancing on page 11, I've seen other photographs of it but not been myself. Any ideas?
Rune