As noble as the "No corporal punishment" "No child -abuse-" "use your words" concept is, all you need to do is look at the majority of today's teens or twenty somethings to see how well it works in the end.
The reason they used to smack us on the bottom (waaaaay back in the old days . . . like . . . before the eighties) was because no one would see the bruises. Worked for me,
AFAIK.