Minecraft wiki entry for Player_versus_Player, associated text: Choosing a base is easy, and really, an unmanned base is a dead base. When a minimal amount of people are manning the base, then you can strike. Steal all goods. Remember that your point is sabotage, and so you should dispose of all you didn't steal. If you really want to damage them, clog all entry points. Don't stay around too long, though. Take a minute longer and they might be online and hunting you down, in the end you're just wasting your time.