Boosting Away From A Fight

[Muleo]

So can/has an Admin please set a precedent? How far away is considered running away?

I'm sick of a few Hessian pilots in omega 5, I won't mention names here. Fighting in bombers against my gunboat.
They try to go for a few supernova, miss, i get their shields and bots down, they boost away, i have screenshot of one boosting up to 10K away. And they start farming NPC for bots...

Then they come back and repeat.

Unless there is a definite rule that says anything above this distance is boosting away, there's nothing I can do about this, I've talked to them and all they say is "we do anything to win, as long as it's within the rules", and though it's a bastard thing to say, he's right, the rules don't stop him from doing that..