Still 8 runs in 2 years of 20 or more. That also accounts for 204 of his 305 carries.
If we gave him more usage as a runner, with better-designed run plays, I think he would do a lot better. He isn't an option runner and never has been. I don't think running option helps him. I've seen him struggle to make the right read and clean hand-offs. As have all our QBs, we might not have the right people to coach run option or maybe we just need a lot more practice. Read options for QB runs take a lot to get working smoothly. RPOs are demanding and massive time investments.
He is 30 now, though, and with a couple of injuries. I don't think in general its a great idea to target runs to the secondary with qbs, but especially not at that age plus.
I think the key to succesful designed QB runs up here is aiming for the side line, or delays into seams then sliding early once past the first down marker.
For strevy, I think we need more play action sprint outs. RPO instead of double option runs. Put him in a spot where he throws an easy pass to a few crossers, has the back as a check down, and if the D overpursues, he can hit a cutback lane for a run. Also, a pin and pull type play with out a hand off option, primarily reading a WR and his gap for a quick screen, with a QB power option if the D overextends again. You can work back in a shovel-type play or release pass to the RB. This would have to be offset by running pin and pull handing off and throwing it.
Wide zone and outside zone run schemes also leave more open for a mobile QB. tite and inside zone run schemes for running qbs only work well with twitchy make you miss in space qbs.