If the child doesn't want corporal punishment, then the child should comport himself in a manner that doesn't merit corporal punishment.
I've got a solution to this problem. The next time the kid screws up, the parent should take the swats. And if that's the case, get a longer heavier paddle!
Kids will see the benefit of having someone else take their punishment and they'll quickly learn that they aren't responsible for their own actions and they have no consequences to those actions.