exit to main menu and re-reload repeatedly until you get a res that spawns nothing but back-to-back pythons, condas, dropships, and clippers. Then don't waste time attacking their hull. Target their power plant and kill them in seconds.
(do this above the belt so you don't re-enter the game inside a rock and die)
Hahahahaha. Really? That's it? Hahaha. Oh, man. I didn't know that's how people make so much Credits. Surely that's a bug/glitch? I'm totally surprised that's even possible. I only get about 150k per round trip in a Type 6 every 10minutes.
What's the best ship to use for it? Can you do it with a Viper or do you need something beefier, like a Vulture?