I guess the best way to get RU is to shoot ships at a homeworld, as that takes no time at all. I didn't feel like doing that since it takes a lot of real time, as opposed to the fuel trick that just take game time.
Any tips there for good 'ship mining' prey though? Most ships are really weak against the Thraddash it seems. They just head straight into the flames. Thraddash is pretty far away however.
Of course the Dreadnoughts are perfect prey once you have got a maxed out \/indy, but then you don't need the money.
I don't know though, you don't really need that much money during the game it seems. There's just a few battles that are tricky, like the annoying Druuge.
No, homeworlds don't work, because you can never win the battle (since ships are infinite) -- you eventually have to flee, and you don't get RU for fleeing.
I like VUX space as a place to get RU; as a bonus you can go through the whole failed-apology conversation tree while you're doing it. Since Intruders don't seem to have the ability to warp in at close range a la SC1, they fall pretty quickly to Cruisers. You can leave the Probes activated too, since Cruisers or a moderately upgraded Vindicator are okay at taking those out.
If you're not that interested in roleplaying the game realistically, you can take advantage of the fact that Dreadnoughts and, to a lesser degree, Marauders are ridiculously weak against Eluders. Hanging out in Crateris blowing away whole Ur-Quan fleets with Fwiffo is a lot of fun.
Zeta Vulpeculae in the Orz region of space is a place worth visiting. You'll discover several auric and treasure worlds, which will give you approximately 1000 units of 'precious' minerals. Haven't visited the Tauri system yet, but this system I mentioned is quite sweet
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