There is nothing wrong with using the 2 pole system, I believe that it is a more permanent setup though and might be a little harder to move around.
A 2 pole system was widely used for stacking hay in the days gone by, it was ideal for that purpose.
I understand that you stand on the log for hewing, do you stand completely on the log? how do you keep your balance, and do you hew down beside your feet, or ahead of your feet?
I am also curious where you learned this technique,
Thanks again for coming on board, with the question and the information about your style of hewing.