Originally posted by thl408:
It's important to note that the zone blocking that the 49ers ran last season is different than what Chip runs. Last season was majority outside zone, which is a skillset mismatch for guys like Boone/Iupati. Chip runs majority inside zone where there is more straight ahead blocking. I think Boone/Iupati would do better on inside zone, which involves an element of smash mouth, drive blocking. In 2012 when the 49ers were killing teams with the zone read, Boone and Iupati were doing fine (inside zone).
I think Garnett should do fine on inside zone. I also think Boone/Iupati would have done fine on inside zone. Below is outside zone. This is not what Chip does most of the time.
He does enough of the outside zone stuff that you want guards that are versatile, able to play with power and also able to move in space, ala Evan Mathis. Garnett is a lot closer to that ideal than Iupati who was a much bigger guard and not nearly as agile.