What I have been trying to bring out is that of course corporal punishment , should always be a last resort. But it must be something that is within a parents arsenal, that the child knows can be used. Of course the parent is subject to regulations when it may be used. It should never be used out of anger for example, but it is decidedly not off the table. And In some instances it is warranted and a parent would be derelict to not use it.
Remember the question originally asked was about a child for whom all other ways have not worked.
I was trying to bring out that ultimately you either report to corporal or you are done.
Of course there are instances when corporal also does not work and then you are done. But at least then you can say I tried everything.
If you remove corporal than you have not tried ”everything ”and you have not fully discharged you parental obligation.
It is worth noting
חושך שבטו שונא בנו
It does not say one must use his stick
It says one who recuses his stick
Perhaps it’s telling us. Don’t be going about beating your children.! But your children should know that it’s not an impossibility to get hit by their father.
May Hashem give us all the wisdom to properly raise our children with health wealth and happiness