A while back, HiTech said he was working on implementing a coad that would cease tracking of damage once fatal damage had been done. Don't know what the status is, but I saw no one who was not in favor of it and several asked he do it ASAP.
I will often fire a short burst at an enemy plane that I am not sure is going in. I'll also sometimes put a short burst into a plane that pulled some sort of crappy move but someone else shot down, just to get an ID on the pilot. For example, if I happen to see some clown flying around doing nothing but trying to cherry pick and running, if someone else knocks him down, I may, if the opportunity presents itself, put a short burst into him to see who it was.
Due to the odd damage tracking and graphic detail, I've been shot down by planes that appear completely unairworthy, missing massive sections of wing or tail surfaces, with one or more dead engines, and burning furiously. So if it appears that it is still able to fly at all, I will try to kill it if it gets anywhere near me or a friendly. If it is not any sort of threat, I'll let it burn up if I think it will.
I try to have a really good memory. If a guy chases an enemy onto my tail and then breaks off, I will likely never forget, he will get left to die at every opportunity. A guy who makes an attempt to clear me will always get a check 6 call if I think he might be in trouble, and I'll dive into ANYTHING if it MIGHT be possible to clear him so he can survive. I'll try to let a friendly get a kill if he's engaged and in no danger. If he might be in danger, I'll try to clear him. I remember who I can trust and who I cannot. Those I can trust can always count on me to do anything I can to help them get a kill or to survive. Those who I cannot trust can count on me to leave them like they left me. Call me to help you and then leave me hanging and run after I come to help and get in trouble clearing you, and I'll laugh quietly while you die from then on. I give everyone the opportunity to make me a loyal friend, and the benefit of the doubt when things go wrong. But I won't keep getting killed saving you while you leave me hanging to run up your score.