Neither PDTs or ECM can handle staggered-launched packhounds. The problem in the context of hull tanking is this:How is that a problem? You either use a weapon with a higher skill floor to deal with the issue, or you sacrifice utility slots that you could be using for other things to do it for you. In this example, you either learn to use PAs effectively to deal with seeker missiles, or you sacrifice shield boosters or chaff to get a point defense or ECM.
-If participant A points in the rough direction of participant B for a few seconds and squeezes the trigger, they are rewarded with considerable damage and the destruction of participant B's external modules. If they slip up, there is no real consequence besides just not getting an attack off that time.
-If participant B manages their distance well, leads and aims well, and predicts any upcoming movements of the target, they are rewarded with fair damage, and not getting shot with missiles. If they slip up at all, they are punished by taking significant damage and losing their weapons.
One is very easy, with a huge reward. The other is hard, with the real reward being you don't get trashed by the easy option.