i find that against really good players they'll sit calm, cool, and collective in the pocket and deliver if you run fag D's in the open field i tend to run them more in the redzone cuz everything is more compact and the throwing lanes are alot smaller, wich plays into the D's hands. i think alot of people take a nano to fag D and visa versa approach to the game and you dont need to, i run plays where i bring 3 to 4 guys and drop everyone else so i still get good pressure, but i set them up just as i would my nano so he never knows when its commin its all about tricking your OPP. i save my nanos for when i need big stops if you give him enough looks at your nanos he'll beat them soon enough.