This is What I've started doing that has help with the doldrums of sifting through the rubbish, instead of launching prospector drones all the time I speed check by picking a direction to go in and never deviate just fly in straight line checking roids leaving junk in my wake, when I find something good I deploy collectors and let them do their thing at the end I will just close cargo and fly on usually those drones try to back track so I just boost away to kill them so I can rinse and repeat, it's been working well so I'm not slow boating going in circles and profits are better and less management of the refinery.