Alan Campbell wrote:
So you don't know then?

I think if you read between the lines, he is actually saying "dont do
it, get some proper ladders instead".

It sounds like good advice to me !

It is fair advice for anyone who needs general advice on how to access a
roof.

I guess I was asking whether there was a tip or trick that the trade may use
could be helpful. There does not appear to be.

Know where I can get some roof ladders?

(just kidding)