Sorry for the thread hijack Martin.
I wouldn't say Mylor is more hassle than it is worth, the facilities there are very good. Some of us are just wanted a rant over the changes there!
It would still be on my list as a base for a weeks boating if I was planning on Camping nearby. I think trailer parking is about £15 for a week and you can probably tie up for a little over £10 a night for a smal boat so you wouldn't have to launch every day.
Helford is another excellent option and moorings can be had for a week outside the Ferry Boat Inn from these folks
Moorings | Helford River Boats
I'm not sure about Camping in those parts but I expect Mollers will be along shortly to point you in the right direction.