Okay, this only works, really, with the ships that don't fire their missle payload all at once (TIE intercepter, any of the x-wing class of ships, droid trifighter). What you do is lock on and fire ONE missle. The enemy pilot will do a barrel roll and dodge it. Right at the end of his roll, fire the rest of your payload. He wont be able to roll again for another few seconds, meaning unless he is damn good at menuvering, he's dead.
nice trick :)
I've just tried it and it really works:)
thanks