I'll try to be more polite than Haydn but I am becoming a bit confused about what precisely the problem is.
One of the advantages of a cat is that they are less uncomfortably in bad weather and a 50ft version should be able to cope with almost anything around the British coast.
OK no-one likes the nasty stuff but its part of the game really.
As for getting to a safe haven then what is your worry. You just go in. Assuming that the place is safe to enter, and many are not in bad weather from the wrong direction. I would guess thats a common thing around Cornwall. Thats seamanship and local knowledge needed for this decision.
A couple of times I've ducked into places yachts don't normally go - once for bad weather, and once cos I was tired and needed a rest and had missed the tide and was generally fed up.
No-one even asked the question. I asumed that if there isn't a rule to say they must let you in then there isn't a rule that says you must go out if you consider it unsafe.
If you need to go in then go - and argue the case from a position of being tied up and secure. I would be amazed if anyone bothered. And if they were what could they do? Call he bobbies - doubt they would be interested - and if they were tell them you've had a drink and can't drive.
Sue you - for what - making a temporary hole in their water?
I think you are worrying about nothing - JGFDI
-------------------- If you can bear to hear the truth you've spoken
Twisted by knaves to make a trap for fools,