I put in a concrete walkway, so that I can no longer use the Xterra to pull my trailer around to the back of my toolshed. Tried puling it with the riding mower using the chains, but it ended up pushing me down the hill. So today I turned the shank of an old hitch ball down so that it would fit the back of the John Deere.
I don't know how much that is worth, because I'm not sure you can buy them.