Even in our 'summer school,' our coaches were saying, 'Gee, he's a little guy, but man does he make plays. He got better. Jeff Saturday . He's a pretty tenacious guy. You can see that ferocity jump out, and that's interesting.
Offensive line is all technique.
It requires strength and athletic ability and agility. But those are just the building blocks. After that, it's all technique. You want to see an offensive lineman use his hands properly and maintain his base. You want to see him anchor at some point and stalemate the rusher.