There was a guy in Florida a few years back … his name was Jerry Pecker or Jerry “something-or-other” who appointed himself as the leader on an old obscure message board that I think went bust a few years ago.
This guy would count and record every nail in every board, to include its size and the material used to manufacture it. He bragged of how some of his inspections would take a couple of days, as I recall, as he filled his voluminous reports with a myriad of unusable information. He claimed that he charged several thousands of dollars for each home inspection.
If this is what you are doing … more power to you.
However, if you are taking 7 hours to do a $350 home inspection, you should revisit the SOP IMO.