Originally posted by Niners816:
Originally posted by Giedi:
I've read some of Walsh's masters thesis "Flank Formation:stress defense" Masters Thesis Link
On page 75 starts the run concepts. Bottom line, he states that flanking run maneuvers need speed. Specifically the blockers have to be faster than the ones being blocked or the flanking runs (i.e. sweeps don't work very well). Since linebackers have been getting faster and faster as the NFL has implemented more and more rules that freed up the passing offenses (as so well stated by THL408), I think what is going on is that the split back, sweep type offense doesn't work anymore because of the current speed of the Linebackers. That's why the more direct blocking and zone blocking - which I'm reading as the Weak I and the Strong I, and the power I formations - are now prevalent and the pro-set formations have been less utilized. He mentions in the thesis that in combination with the direct blocking (power run formations) the deceptive blocking should be used to utilize a defender's speed to get him in the wrong position, or create favorable blocking angles. All in all, the pro-set does not lend itself very well to the power blocking concepts now utilized by what looks like a good portion of the WCO coaches being mentioned. 
I think that is Harbs idea of his offense. I believe he wants the power run game with the WCO passing game. As THL has illustrated numerous times we run all the WCO concepts in our passing game. That is the nice thing about the I, strong and weak form is they lend themselves nicely to running all the traditional WCO passing concepts and not lossing the disguise they provide in the power run game.
Now I still think there is a place for the pro form in a modern WCO. As I mentioned above, it lends itself nicely to the hb passing attack and a double screen game. Also think the split could be utilized as a formation shift based on coverage. For example, let's say we come out in an I form and kap reads a cover 2 look. Why not shift that formation to a split and audible to a Texas concept(cover2 beater) and get those backs to the flank and set up the Texas concept with the back and TE and on the other side get that back in either a better blocking position or even make him a hot receiver to exploit and blitz pressure.
My criticism of the WCO and the power run game is simply that - in the long run - I think the WCO is basically a straight jacket for Colin. Shannahan added verticality (easy to do since he coached under Al Davis the king of the Vertical Offense) and took advantage of the Elway Arm. I think - eventually - that's where this offense will evolve to. The power run first, then the WCO passing attack with some verticals via Ellington and Patton, and two good TE's that can catch. Vance and another good receiving Tight End.
Sweeps are out of the question with this O-line, on top of that, Gore doesn't have the speed to run the sweep the way Wendell and Wattters were able to run it because they has good speed to the outside. What I will say is I hope with the addition of Martin, the inside traps and quick hitters will be more effective. If the inside trap game gets consistent, then the power off tackle will be more effective.
The cover two is more of a pass defense than a run defense in my opinion, if you are running the cover two off a 3-4 front, so if Colin sees a Cover two with a 34 front, I'd rather Colin audible to a trap or an off tackle run. With so many teams employing a version of the zone blitz to stop WCO attacks, teams need a power run game to counter the zone blitz. Here's why, the Zone Blitz philosophy is to give the QB a false read. It *may* look like a cover two and Colin audibules to a zone beater, but they might drop a lineman in that area if it's really a zone blitz.