Three hours later, it's been an instructive and productive afternoon.
I've followed Wonder Boy through half the neighbourhood including, to my satisfaction, four more of the addresses on my list. And all of those on my address list not visited are a good distance away, certainly more than walking distance.
So, I have my connection...
Legitimate businesses held under the sway of racketeers and crime barons, too scared to resist having their addresses used for whatever purposes their overlords choose... and that's assuming they even know about it.
The pieces of the jigsaw are dropping nicely into place.
As evening falls, I'm still trailing Wonder Boy. He's not called anywhere new for a while and seems to be headed for some specific destination. His swagger's worn off and he's walking more slowly.
How far's he going?