<This is not really an exploit.>
You schould be tier 3 or you should fight around 3-5 tier 3s alone.
Start your ship from anywhere and then hyperspace to Nyms-hovel
in the Lok system
. Watch out for: corsair man'o war or something like this. there is a white space station (just a modell) near them. Fly to the corsairs and kill them. will give you around 1,6k xp if i remind correctly. they respawn every 20 secs and are very easy to kill. Im going to post the wp soon.