I had the Demco Excalibar(sp) tow bar and it has the "silent" hitch. That is, there is a square bar stock with a spring that goes inside the receiver hitch. When it is placed in the MH Receiver the pin screws into the piece inside the channel of the hitch causing a very tight non-rattle connection. the other side is a keyed end. Pretty darn hard to steal. Left it on all the time.
Wayne MSGT USMC (Ret) & Earlene (CinCHouse)
2008 Winnebago Destination 39W
It is what it is, and then it is what you make of it.