JetDriver--
Thanks for that. Presumably the 'required visual elements' are the minima which get mentioned in hushed tones from time to time? And I do get a bit confused by the idea that by the time you've decided to do a go-around, you've practically landed... what's the disaster you're saving yourself from? Hitting something that might be hiding in the mists along the runway?
And has anyone got a pointer to somewhere online where the various categories are listed or discussed? It was clear from listening to the conversation of the pax around me that the whole business of flying safely through muck isn't understood -- a lot of people were genuinely scared by the end of it all.
R