[Perfectlap]

that's right pump the brakes for non-abs. Got it backwards.
Locking up the brakes isn't really a technique, more like an unexpected situation that is fairly common when really braking hard. Usually when you brake too late and stay on the brakes too long.
I had an instructor at a very challenging two day AutoX driving school braking so hard I thought he was going to put his foot through the floor board. yet he never locked up. A very violent feeling experience as a passenger.