I believe if you do it correctly, the result is to keep the defense off guard and never sure which play is coming. When no matter who you have in the backfield is capable of running the ball, the defense always has to respect the run. It has the same effect as a QB that can throw and run.That's is exactly what you don't want to happen is to keep changing Rb therefore no one is getting in a rhythm. If you keep putting certain players in for certain plays it a huge help to prepare defenses for certain situations of what kind of play will come. Nothing more irritating then watching a Rb having what looks like a good day then to be replaced because the other backs need their carries.DeShawn Wynn was good. He averaged 4.7 and 4.8 ypc in 2005 and 2006. One thing I like about Florida's running game is they always mix in a lot of runners instead of just one feature back. Wynn was the starter in 06 and still only averaged about 10 carries per game.If it is the guy from Florida, is he really that good as a coach? When was the last time Florida had a good running back?
I definitely think one thing Nebraska should do is get away from this one feature back idea. Don't get me wrong, I believe Lucky is our best running back, but as deep as we are at the position we should be spreading the carries around a little more.
I also wonder what role Stan Drayton has played in coaching Percy Harvin. He's technically a wide receiver but he gets so many rushing attempts in that system it stands to reason that Drayton has played some role in developing him.
Also, I agree that you don't bench someone who is having a great day. If a certain RB is running all over a team then you keep feeding him. But how often does that happen? It's usually much more hit and miss, and it helps to be able to give three or four different style runners different looks to keep the defense off balance. I think when we did rotate Lucky and Castille this season it was very effective. There's no denying it's worked for Florida over the past three years. It worked for USC with Reggie Bush and LenDale White, as well as with the huge collection of backs they have now.
Granted, every now and then a Ron Dayne or Edgerrin James comes along that is durable and dominant enough to handle all the carries. But otherwise I like using a platoon of RBs