I flew in light fog, but was anal in maintaining effective visual reference with the surface.
Step Turn - firstly, what is 'light fog'? There is quite a clear (excuse the pun) meteorological definition of Fog in terms of visibility and it is the same as cloud.
Secondly, just maintaining reference with the ground rather than retaining a visual horizon, is EXACTLY how this guy killed himself and his pax.
If you are looking at the ground instead of ahead then you will inevitably not appreciate how bad the conditions are in terms of visibility and cloudbase - it is like driving fast on a road in fog looking just over the end of the bonnet and convincing yourself that because you can see the road surface, that it is quite safe to continue.
I am afraid that unless you change your attitude, you could well end up as a statistic.