Frank I think you have gave the best answer and I also agree with what you have said. At least there will be one flat which will make it easier to measure for the competitors and judges. Scott, I had measured the diagram with calipers and I found the width and length the same as the L/W is stated on the diagram 1.001. At least by one thousands.
I honestly do not see the problem with asking on this forum how to measure this stone. Obviously two members on this forum disagree. Neither gave a constructive answer, only criticism. I call that rude in my world.
Also I wanted to mention that the pdf pavilion diagram is not very clear like the Gemcad version. Perhaps someone can post a better pdf pavilion diagram for those that do not have Gemcad and want to compete.