I do that training here
http://forum.topeleven.com/top-eleve...-training.html

I 'm going for the 8% or 10%.
This bonus is working (and affect however the game play) even if you don't watch your game.
Most of my games, I don't use the extra bonus button - except for emergency.

I give little more attack drills to my attackers, defense to my defenders and more mixed in my MC.