That's interesting. Thanks for sharing the knowledge. Always more food for thought. That follows pretty closely to what I was thinking about the form except I like the analogy of the underhand hammerfist. I should have figured that out on my own 'cause why else would it travel back up the same line.Doc said:..It is a rising forearm underneath the chin, followed by a downward hammerfist to the clavicle. From there the the middle knuckle punches through in an arc that loops away from your attacker, than returns as an underhand hammerfist. However that is only what I was taught...