Mine happened before I was fully fenced, but with all the bushes, they would have had to be in my yard or in the yard next door to see what was taken.
I had hired the fence company to move a piece of fence and they had a new young employee, and an estate sale company had some $10 per hour workers next door for several days helping prepare for a sale. I am sure it was one of these people because they had time to study the yard thoroughly prior to the night raid of the yard. They'd also figure out where to park and who to take to help do the haul.