Rules ALSO state that if you depart the fight you are running away ... you don't have to be in cruise ... if you dock, enter a trade lane, hit cruise, etc, you have disengaged and are considered fleeing. Thus ... you must leave the system and not engage the guy(s) / gal(s) you were fighting for 4 hours.
Also, using thrusters in this way normally will get you well out of gun range quickly ... if you thrust more than 2k away from your attacker ... its shield running if nothing else. Do not turn back and re-engage.
EDIT: Don't know what the distance really is ... since its not in stone ... but 3k is the max range for most CDs.
So ... what can be done? If you are in a ship that thrusts faster than another and you thrust away ... you're running away and gotta leave the system and avoid your attackers for 4 hours. Simple and sweet. If you wanna stick around and fight, don't leave the fight area.
