I count about 20 more times over 600 PA.
It would actually be 30 more times over 600 PA, but you can't assume Zimmerman is going to do anything with him every time. His career .277 with men on was actually the best out of my 4 options for this exercise. His career with RISP, and '09 with men on or RISP were all lower.
So within the bounds of this time-killing math exercise, Zimmerman advances Hudson ~8 extra times over the course of a full season. I'm far too lazy to break down those 8 times by Zimmerman's stats but suffice it to say that most of the time, Zimmerman's hit alone isn't going to score Hudson. Bringing Dunn into the equation lowers the mathematical odds of Hudson's OBP providing extra runs even further, to the point where we might as well be talking about what ELSE Hudson brings to the team.
All of the times that Hudson gets on base and no one drives him in ultimately do not matter. Well, at least not in a strictly observable sense. This is where we get into wearing out the pitcher, etc.
I think this whole discussion has run it's course.