Thanks everyone for taking the time to respond. Crikey, it sounds a complete minefield, although why am I not surprised in this wretched country? If they can tie us up in red tape, make us jump through hoops, and thwart us at every turn, it seems they will. Okay, rant over,promise!
Lady Muck, thank you for the heads up on Roydon. I will make some enquiries, and also have a chat to our boat safety guy to get the lowdown on the additional regs. I want to do things as ligit as possible, and I would be happy to pay the moorings manager a percentage of the rent just to keep an eye on things for me, but it seems from what you're all suggesting that this may be more trouble than its worth. :-( If anyone has any further ideas, I'm all ears! I don't really mind where in the country the boat ends up, so long as she's safe, and cared for.
As far as the hardstanding idea goes, it's a good one, and certainly another option I haven't though of, but I wouldn't know where to start, so again, if anyone can help, I'd be grateful. It would have to be pretty cheap, as my finances are going to be really tight for a while. :-)