I normally don't take the time to correct people, but I did this poh dupe and you have it all wrong.
It is patched now mind you.
Anyways, you needed a friend with a house and a mahogany prize chest, clay attack post. Your friend wields something with low stats like flowers and you wield something like a battleaxe or a whip so you end up crushing the post first and getting the money out of the chest. Your friend places 50k coins in the chest. After you crush the clay attack post, walk over to the prize chest and it has a claiming screen pop up. It asks, "would you like to take the money out of the chest?" Before you click yes, your friend would log out of the game, and after he logs out click yes. It wouldn't boot you out of the house until you clicked yes. As you click yes, it boots you out of his house and you now have 50k in your inventory. To my surprise and my friends, the 50k was still inside the prize chest in the house as well...
We made a ton of shit off of this.