Peter, I am so very sorry to hear of your robbery. I can only
imagine the sense of violation you must be feeling.
Sadly, most residential robberies are accomplished by hired help of
one sortor another who do just what your guy did: learn your
routines, survey the surroundings, and wait for an opportunity. Your
guy sounds like he was particularly knowledgeable.
So sorry for your loss; Glad no one was physically hurt.
Linda in central FL