I had never employed a private investigator. Fortunately I never need one. I think it will be a very difficult job. You have to work a lot of hours, always hidden. I think it will be very boring, not so exciting like we see in the movies.
I have been working as a journalist since 1988. Sometimes, when I have to investigate some item I become an amateur private investigator, but fortunately this is not the main focus of my job.