My personal strategy has been to find a body of water not in the direction of the prevailing winds and steal a sailboat to live on for at least 2 weeks as the more radioactive isotopes decay.
More to the point, most of the bad shit to happen after a significant nuclear exchange will hit the Northern hemisphere and wind currents being what they are will mostly keep the fallout up there. Well, here.
I think the Falklands reached a milestone in mine clearance, wherein they believe most of them are dealt with now.
Still, 'most' implies an unnerving possibility of chance.
- ed: I realise, belatedly, that this circles back to the original conceit - staying out of the way of noxious winds :)
Besides that idle thought- there's quite a lot of materiel down there already, so unless the UK withdrew war machines to help in the global annihilation, Argentina would still face some stiff opposition.