I've experimented with it in a world where I was going to drop out of 1A and I had no running backs and 12 WR's. It didn't work so well. I think strength plays enough of a part in the current engine that unless you have some strong receivers for some reason, you will end up getting stopped for 0-2 yards too many times. Now, if all you want to do is get 1 yard on 3rd and 1, it can work. Like anything in this game, I found if that is the only time you do it, a good coach will gameplan against it and run a 4-4 defense on 3rd and 1 and stuff you...but then again you can then adjust your gameplan to throw it over the top in the second half.