I had a fleet member complain about moving slow between enemy groups after evasive maneuvers had been exhausted and was unable to use Full Impulse because he had just come out of combat. The solution to this is deuterium surplus. Deuterium surplus is a device awarded for completing a combat mission or by crafting if your engineering crafting skill is level 10.
The mission can be picked up in the Boreth sector in the Alhena system. Just approach the system and the distress signal will pop up. The mission can be repeated with a 20 hour cool down. Just FYI