I still cannot find a single example of a couple in the same situation as the McCanns having "searched all night".
It was suggested earlier by a poster here that somehow this might be the norm.
Without a single example of it ever having happened, how can it be normal in any way?
It may well be what people think they should do, what they even think they would do but the reality appears that it is not what is actually ever done.
So the McCanns were acting perfectly normally.
There was also the matter in the OP of those investigating officers "each and every time" stating that the Amaral thesis (book and film) had not damaged the search. So far not a single example of such officers has been given as the forum rules suggest they should be. I am sure they exist, just would like to see them so that I can consider the actual wording.
And what about the nature of the "search". What is it, in the opinion of those who decry what has been done, that the McCanns should have been doing over the last five years? Digging up private gardens? Bulldozing the beach? Digging up the municipal drainage system? Please explain what you believe should have been the physical priorities of the McCanns.