As early as 1st June 2007 the NPIA's profiler recommended that the PJ should investigate Madeleine's family and friends. It was the NPIA's search adviser who recommended using Grime's dogs. None of it would have happened if the UK hadn't pushed it's way into the case. It's not correct to lay all the blame on Amaral. Encarnacao and Neves were in charge, not him.
http://www.mirror.co.uk/news/uk-news/mccanns-should-be-treated-as-suspects-brit-200689
I don't think it is as clear cut as your post implies,
The NPIA'S profiler, Lee Rainbow, gave generic advice to the Portuguese police. The misunderstanding that he said anything other than that arises from Amaral's lawyer's interpretation of a confidential document during the libel trial.
Snip
His lawyer Antonio Cabrita, reading from a Portuguese translation of the previously- confidential report,
said: 'The family is a lead that should be followed.
'The contradictions in Gerald McCann's statement might lead us to suspect a homicide. This is a lead that should be investigated.'The lawyer added: 'Portuguese police had only considered the abduction theory. It was British police who said they must consider homicide as well.'
Mr Cabrita did not outline what ' contradictions' had been found in Mr McCann's statements and refused to give any further details after the Lisbon hearing.
http://www.dailymail.co.uk/news/article-1250084/How-letter-UK-police-turned-spotlight-Kate-Gerry-McCann.html#ixzz4j30EzGmT Lee Rainbow made the report, I'll take your date of 1st June 2007 ... which very clearly did not say what Antonio Cabrita thought it said. No-one seemed to be interested in the generic advice on procedure or doing the proper thing of clearing their feet as advised.
Interest seems to have settled on an almost racing certainty ... as Amaral outlines in his book that the profilers were intent on an individual they seemed to think fitted their profile with a
90% supposition.
Snip
All the same, according to the English profilers, there is a 90% chance that he is the guilty party. That seems to us to be a bit too easy. We think that drawing conclusions based essentially on the statement of an ex-convict is rather dangerous.
AmaralIf Lee Rainbow had advocated that British dogs were used in the search, that would appear to be advice which the investigation ignored. Ironically it seems that Madeleine's parents themselves were the catalyst for that, not the profiler ...
Snip
The couple, worried that inquiries by the Policia Judiciaria were losing momentum, asked detectives last month to re-examine the apartment where their daughter went missing and also for the use of sniffer dogs to seek fresh clues.
The subsequent use of British police-trained dogs detected the 'scent of death' on Kate's clothing, a finding that was central in the decision by the Portuguese authorities to name Madeleine McCann's parents as formal suspects. Fresh forensic tests also found new biological samples, partially matching Madeleine's DNA, in the apartment and in the parents' hire car -
developments that crystallised the thesis of Portuguese police that the couple were somehow responsible for the disappearance of the four-year-old.'The family were asking for the investigation to be more thorough,' said a source close to the McCanns.
'That is the supreme irony of the case; that it was them who were asking for the police to look harder at the evidence and re-examine all the issues.
Is that the action of a guilty couple?'
Police sources close to the investigation said yesterday that, although the sniffer dogs 'reacted' to some of Kate's clothes, 'no usable evidence' could be extracted for DNA testing, meaning there was no forensic corroboration for the dogs' reaction.
https://www.theguardian.com/uk/2007/sep/23/ukcrime.internationalcrime