I do fairly well in the gun positions of a 17, that said , the people who shoot me down the most take their time to set up the shot. gets irritating after awhile also!
It seems there are 3 types of attackers i usually encounter. Ill list in order of most hated to most favored from gunner standpoint.
Stalker: Pilot stalks you for what seems like an eternity to get into the right firing position,screams in on a diving attack from a position not covered well by the guns, usually front outside quarter of the bomber drone. The pilot zips thru fast and maneuvers enough to make him hard to track, climbs and repeats.
slasher: Pilot starts out taking his time to line up his approach, screams in shooting at whatever aircraft he has a shot at. Difference is he does not climb back up and return to his approach vector, preferring to settle in on your six (high or low) and then making his attack run from around the six position.
Meat cookie: Pilot makes climbing six approach , dives down, climbs up, rinse repeat , till in range on your six
I like the last one the best, they allow me the use of the belly gun as well as tail. Usually dead when they get near me