John, I would say you are the exception to the rule, especially in winter. 5-6 weeks in advance is good going
I work about a week ahead which to me is perfect, I think a lot of customers get thier carpets cleaned as a spur of the moment thing eg they have a spill or get surprise visitors if I was to tell them they would have to wait 5-6 weeks they would go elsewhere.
Woodman, I'm sorry I'm a very cynical git, how about some more details, how does he achieve such a great income (£5s/yard, £250 a suite, does he do lots of commercial work)
Mike