Hummingbird Point,
The illustration does show that pose. But, if you follow Cushing's actual words he says that the punch is held
"with one hand holding the point of the pitching-tool very lightly and slantingly and at a wide angle"
Slantlingly and at a wide angle - not a vertical angle.
The illustration you are showing - made by an illustrator - shows the knapper kneeling on an arrowhead. But, if you look at Holmes (1919), he plainly clears it up.
Actually, a second time Cushing's own words prove that the illustration is wrong: "usually by clamping it in a folded pad of buckskin UNDER the knee against a hammerstone"
Cushing never said that the knapper knelt on the arrowhead, as shown in the photo. The illustrator imagined it.
The picture is wrong. It is hogwash. It is baloney. But, flintknappers failed to pay heed to Cushing's actual words, or they would have figure this out a long time ago.
Also, seeing is believing unless a person is indoctrinated. I showed the results for three years. Now, I showed that I followed Cushing's literal, precise, and exact, words. And, I can show why over a century of theory was hugely misguided. I lay it square at the feet of flintknappers and... Ha ha ha! You know the story. But, archaeologists are so interested, because I built on evidence. And, when the winds and the storms come, the evidence is not going to go anywhere. Now, we are down to fighting indoctrination. Also, I left this under wraps for three straight years for a number of reasons. So far, not one person has said, "We already knew..." As they could have said in January of 2015. My prediction is that they will try to pretend that it simply does not exist.
But, I just had four archaeologists come to my house and look at everything, and hear a bit, and they were amazed. I have already been invited to go to a research project in Guatemala this summer. I am also getting queries from archaeologists in Europe. And, this was all done with evidence that was shown to flintknappers multiple times, and was soundly rejected. So, you know what that means. Lol!! The good thing is that Native American knappers really get interested when they see my cultural evidence. That causes them to go into overdrive. Are you on Facebook? I have found it to be extremely effective. I now have close to 800 friends, or contacts - all people who asked to be my friend. And, I am friends with collectors, and alot of different people. I was quite reluctant to use Facebook. It is hard to learn. But, it has opened many doors that would not have been opened otherwise. Anyway, if you go there, look up "Knap Yucatan"