Went through the book, and though Les knows more about me on most subjects, I have to say the section on knots is a bit lacking.
Les recommends a bowline...which I doubt I would trust with modern rope like nylon, I would suggest a buntline hitch instead,
I think he should have also shown how to tie two ropes together, a sheet bend knot for example.
I suggest that everyone should learn the knots listed here.
http://www.4thtyldesley.co.uk/knots/