I'm sure you are doing this but make sure you keep hitting the T button as you emerge in your fighter. This targets the torps st. away. Load up with fast-locking missiles for those that are not too close to the big Y. For the torps that are too close blind fire and using your afterburner to close the distance should do it.
Basically: Hit the T button, Afterburn towards the torp hitting that fire button and repeat. If the target gets locked via a missile then fire the missile hit T and go to the next.

Hope this helps

The best thing to do is to fly a fast fighter with low energy drainage lasers..the best ship would probably be the Shroud (that's the ship I did it in at it was easy) also after afterburning to torps and you're close press Z so you're the same speed as the torp..it makes life easier! Have fun and "Good hunting pilots..God speed"