Reckon praying is best...
Rode the last 10 miles home tonight in patchy fog and generally had problems before that as I think the moisture in the air was such that it was condensing on the outside of my visor and cage drivers were driving like they could see to the moon and back...
The fog was near freezing so having been pretty comfortable before my fingers nearly dropped off...
Don't know about fog lights I'd settle for bikes having decent lights...
Still better than sitting in a nice warm car