Yama Tsuki - Twin Fist Punch ... would you really ever do something like this?A status update on FaceBook just recently had me writing that someone should put the above technique interpretation out of its misery. If ever there was an advantage for throwing multiple strikes at the same time, we'd be punching with both hands and throwing in a kick for good measure.No, I don't like the idea of throwing two simultaneous strikes, unless somehow it was sandwiching something of the opponent between your two hands. And, no, I don't really care much for the yama tsuki bunkai as you see it above.Choong-gun - Step 31 shows off Taekwondo's 'U-shaped' block in a back stance.Today we practiced the twin fist or U-shaped block/punch as an actual strike against an opponent. We used the lead hand to grab onto the opponent's lead hand, strip it down and we launched a high level strike that crested over the opponent's shoulder to strike at the temple or behind the ear. The move works well even if the opponent is grabbing you (as opposed to you grabbing your opponent).Most of the punches from our hyungs up to this level have been fired from the chambered position at the hip, through centreline to either middle, low, or high sections on the opponent. Such a strike is typically looked upon unfavourably by modern day practitioners who think boxing type punches are far superior than traditional martial style strikes. Choong-gun's twin fist punch however is the first strike that gets the elbow parallel to the ground - just like you were hitting a punching bag whilst bobbing or weaving under an opponent's strike.Can you see the bottom hand applying some form of control to the opponent and the top striking hand just tagging him in the head?