If you are covering a wing who is going slower than the drones you are facing (I don't care what the reason or how "stupid" you think they are) you had better have your PD set to ON or you're the dumbass and a poor wing. Losing a ship, for any reason, will probably lose you the battle. If your wing is flying poorly in your estimation it is up to you to make up for it, not help lose the fight.