Minecraft wiki entry for Multiplayer_PvP_bases, associated text: What you can do: 1. Make it extremely small: bases are harder to detect by x-ray-ers, if they are small. So, try to make your base as small as possible. 2. Surround it with ores: Average hackers keep x-ray on the same setting as normal, which means that they cannot see through ores. Surround your extremely small base with ores, preferably coal, with a silk touch pick. Try to make it look like a natural cluster of ores, not big or even shaped. Coal is recommended, as it is in large blobs. Also, try mixing the coal ores with other ores, preferably iron ore.