mmmmmmm nice if you read the posts - I have described those common weather conditions many times and suggested people go up there at that time of year to see for themselves - I said only just now that the WX was fixed on the landmass and that they were not in IMC during the critical part of the approach - the effect of that local WX was to make judgement of range impossible to any practical degree and would also not have allowed lining up with any ground feature consistently enough for steering - as the yachtsman said, you could see the white of the light house through that thin upslope mist from a considerable distance but as you close at speed .... look, just look back through the posts and ask your colleagues (?) how you would use such gear when approaching, say, a FAF in the sandpit at night or in bad vis.