|This is to depict the positioning of the vertical rising punch as executed in basics and kata drills, etc.|
|When normally practiced, the fist path is directly forward as if the punch is going to hit a target of the adversary's shoulder/arm vs. the centerline solar plexus.|
Take a look at the Makiwara video at about 5:19 minutes to see the shifting movement I mention in this article:
Then take a look at a video made by Andy Sloane Sensei, Go-dan Isshinryu as well as Isshinryu Historian:
If you cannot see the above from Sloane Sensei take a look at his FB Wall to find it:
Remember, all bottles are good, they all serve a purpose.