Dayz dupe method 0.61 stable.

You will need:
1. Examples include tents, millitary tents, barrels, perhaps vehicles but they are not present in this build, perhaps ammo boxes and protector cases
2. The things you want to dupe.
3. A knife.
4. A shirt you can turn into rags.

Step by step.
1. Have the gear to dupe on you
2. Place your container near a place where you can look for stones/sticks
3. Wait some minutes for the server to save both your character and the container placed in the desired location
4. Place all the items to duplicate in your container
5. Start looking for stones/sticks
6. While your character is looking for stones, open your inventory, drag and drop the piece of cloth that you can tear into rags to your hands, nothing will happen, it won't go into your hands, this is normal
7. Drag and drop your knife/axe/... on the piece of cloth and click tear into rags

https ://sendvid.com/aw0kb7tg Here's a video of proof. (Not my video)