No, I'm afraid I haven't read his memoirs. I just notice him whenever his name crops up because he's a successful and well-known Manxman. He's also doing a series of lectures at my daughter's uni in March and it was a bit of a coincidence that you should mention him just now.

You'll be able to find out quite a bit about him on-line - Wikipedia, Google, etc. You'll probably have more success there if you search with Frank rather than John.

Good luck.