You are doing it wrong :/ You don't boost through the whole instance. Go in the UD side and pull all the ghouls and skellys there. Then park your alts in the open area there (No Eye of Naxx there, very important) and go into the living side and pull as many groups of ghouls/skellys/abominations as you can. You can keep doing this until the pull distance is too far. Then you can either reset or venture into the living side and kill as many as you can, including the one ghost boss or one of the rare spawn bosses ^^ Why not go into the living side first? 1) there is a gate where bugs come out and monkey stomp your alts in 1 hit 2) you can't exit the living side. Try this. It's boring but it works. Plus you get a ton of runecloth if you do any looting and greens level 50-55 that DE into Greater Eternal Essences. These sell for a decent clip on my server.