If you've discovered the secret bounty organization, then no doubt you will have been assigned a mission involving killing a slave trader named Zuulan as part of your initiation into the society.

When you find Zuulan's speeder, select the option which sets off his alarm. Zuulan and his thugs come running, and no matter what conversation option you choose, combat is the end result (remember that you MUST BE ALONE for these missions).

Instead of attacking your assailants, choose to "use" the speeder again, and this time select the option which affixes the frag mine to the hull of the craft. As a result of this, you will kill the Zuulan who comes running out to his speeder and gets blown away by your bomb, but at the same time, a second Zuulan and cronies is spawned very near by. Pick up the credits and equipment off of the dead Zuulan and then round the corner to engage in conversdation with the other Zuulan and kill him as well (an easy battle).

You'll get twice the stuff and twice the XP, plus if you're a light sided character who needs the credits, you don't gain the extra dark side points for killing him! It's a win-win situation.