Agreed. By the Wingspan method I should be shooting a 27.5 to 28" draw. However because I have extremely wide shoulders and somewhat short arms, shooting that short of a draw is extremely uncomfortable, and hardly accurate. Because of my shoulder width I need to get up right around 29" AMO to 29 1/4" AMO (depending on loop length) To get my release arm back and in line for proper back tension.

There are way too many variables in our individual builds for the wingspan method to be anything but a general ball park.