Weymouth Harbour has tried much the same thing, and hopefully come unstuck ! Huge price hikes, a while ago telling everyone they'd have to book their slot early; funnily enough, not many takers.

A chum has a boat in Weymouth Marina, but they were a bit more civilised than St.Kat's, merely enquired if he fancied being elsewhere for 6 weeks ( I think a financial carrot ws offered, forget how much ) - he just said 'no thanks', though driving to the place let alone sailing would seem problematical at best while people get paid to run or sail around in circles...