Even Sir William Wratten (was it?) commented that they would have crossed the shoreline something like 6 secs after waypoint change - which agrees with my calcs.
So, were they flying blind for (20 less 6 less 4 for pull up =) 10 secs before reacting
OR were they flying OVER the mist for a while, it being on the sloping ground until merging with the orographic cloud (circa 900ft on the day) - (as I have described and one of the light house keepers commented at the time on hearing the approaching a/c that it would be above the mist).
I know these conditions - it is a problem of judging range to a fuzzy mass rather than being in it.