Does enhanced hull plating let me add evade results each time I defend in a round or only once per round?
Enhanced Hull Plating
"During the roll Defense Dice step of the Combat Phase, if your ship is not Cloaked and you have no Active Shields, you may add up to 2 [evade] results to your defense roll. If you do so, place 1 Auxiliary Power Token beside your ship for each [evade] result you added with this upgrade"