Question: 

Do you have a cover for the hole in the bed?

Answer: 

The beauty of the Turnover Ball is that, when the ball is stored upside-down in the receiver, it perfectly fills the hole and doesn't allow dirt and grime to get in. We have been reluctant to provide a cover because doing so may also keep the hitch from being flush with the bed, a benefit we have worked hard to engineer into each of our hitch models.