When I was growing just the mere threat of a spanking was enough to keep me in line, most of the time. My parents did use a lot of restraint the few times they let me have it, and looking back I did have it coming to me on those occasions.
Exactly. Spank them when young and they grow up not wanting to be spanked. I got maybe a half dozen before 7-9 years old that I can remember and none after that because I towed the line.