Actually the main pressure point on the neck (bracheial plexus origin) is more effective with a larger strinking surface...now if you want to hit the mandibular angle...you're going to have a tougher time getting it with your forearm....pressure points tend to be a close range technique in any case, especially when dealing with the upper body, so so I have been taught. As for the braking down of kata, my sensai calls it bonk-ai. All adults do it and the children are taught limited versions as a memory tool in kata.
