I would like to point out that everything that you have put forward about this "palpation" sexing method has been about Boas. I can't find anything anywhere that says that this works with BP's. I have found references to Boas, but once again no BP's.

I just tried dong it exactly the way the video said and I couldn't tell the difference between my confirmed males and females. Granted I have never done this before so I could just be doing this wrong.

If anyone can put forward any information that this works with Ball Pythons I would love to see it. It certainly seems like it would be less intrusive for the snakes if it works.