JP,
I asume some of your post is directed at Tandemrotor. Maybe if you answerred his questions, we might move on.
You seem to think that the 'lines on maps' are of little relevance, but that is the evidence we have and that you choose to ignore (because of course it is inconvenient).
Not inconvenient at all. As TR and myself, and any other SH pilot you care to drag up, will agree, they are just lines on a map. Tactical low level flying rarely tramlines the lines drawn on the chart.
The only explanation that fits the facts is that the crew mistook the fog signal compound for the lighthouse compound; this would have led them to believe that they were over 500 yds to the left of where they actually were.
NO NO NO! That is not THE ONLY explanation left. It's one, granted, but just a theory like any other.
Answer one question then: Why do you wish to see the finding stand, when there are no facts to support it?