Any working duping hacks?

Say what you want, call me noob etc. But we're on a hacking site right now. You have the same pride as me, except I don't use clients. I am an average player with 3 6/8s which is not much but average..and legit. But I'm very greedy. I haven't took advantage of any previous dupes and I'm looking for anything that works right now. So help me out?