Hi Hebber,
Totally sympathise with you over the veg. We're on Westray, the northern corner of the Orkneys, and the wind and the salt in the air are a nightmare for veg.
I've started a lot of cabbage, sprouts and beans in pots and, now that the weather is improving (at last), I'll plant out under some covers I've made out of wood and clear plastic (mini-polytunnels) and then keep my fingers crossed! An experimental row of lettuce planted out last autumn lasted only a couple of days.
The only real answer is a polytunnel which brings a whole set of new problems. I've just ordered one from Highland Polytunnels. It's a 10ft wide garden tunnel, but they're supplying it with a heavy duty frame and a toughened skin - here's hoping.
I'm lucky in that my wife has a job which means I can concentrate on the croft. If you do make the leap, can heartily recommend pigs and Saddlebacks in particular. I'd be happy to sell you some stock!!!

It would be a great excuse for a trip to the Western Isles.