And it's not like Solder is hard to find on a field.
Anyhow, I think one thing that we're seeing is that--contrary to conventional wisdom--"small" athletic linemen like Solder or Wendell or Mankins or Connolly, who are all very light for their positions, are pretty lethal in the running game because they're so damn good at pulling and at getting to the second level. People often talk about having road-grading linemen and about how great so and so the 350 pound guard is in the running game but by and large the Bryant McKinnie types aren't actually that useful in the running game because they're too damn slow.
to be fair, I doubt that Solder is pulling all that much. Tackles rarely pull because it would take them too long to crack back all the way across the line (of course, there is the convoy created for a screen...a place where I think we visibly miss Matt Light's ability to get down field). The other side of that coin would be the "getting to the second level" part you mentioned, which can be huge for the weak-side tackle to tie up the weak-side linebacker (or potentially middle linebacker) from being the second guy to the ball. Since LGBT and Ridley have been so good lately at breaking the first tackle, taking out the next man up before he can even reach the ball is fucking humungous.
That being said, as stated above, the Patriots have been doing most of their legwork on the left side of the line. That kind of rules out Solder/Mankins pulling or getting to the next level as they have responsibility to get a hat on the guy in front of them. In particular, the Patriots have gained big chunks over the LG spot. Of the Patriots five biggest run to the left side of the line, four of them (36 yards, 18 yards, 15 yards, 14 yards) come over the left guard spot. That generally means that the center won't be pulling or crashing to the second level. If all of these things are true, it tells me a few things:
1.) Connolly has been very good at either (A) pulling down the line or (B) getting to the second level
2.) The left side of the line has been winning their battles
3.) Wendell has performed well as the help blocker, a huge rule if they want to run over the guards
4.) Hooman may not be getting enough credit for coming out of the backfield as a FB or helping Solder at the line of scrimmage
I haven't watched any film this year, but I'd be intrigued by you big brained bastards that have the time to watch the film and give a better summation of the line play.