If you are playing in season mode, to get more passing yardage use Directional mode. It will show when a receiver is open, and you can still throw the ball when a receiver is not fully open.
Select M. Sherman's playbook and use the Shotgun Double Flag play. Make sure that passing is in normal mode. When you snap the ball, wait for the right receiver to run his route (when he is coming back to the right) and throw a bullet; this will usually get a first down.
After scoring a touchdown, hold L to spike the ball.