Well the longer your draw the more pinch you have at the anchor/release point. You can overcome much of that with a string loop and some brass nock sets but the pinch is still there. Bowtech has the Airbornes at 36" ATA which is a great ATA if you ask me. I've always ordered my Hoyts which offered 36" ata bows, and my Bowtech Allegiance is my first short ATA bow at 33". I believe you'll be great at 36" ATA with a string loop and a 31" draw. If you want to go shorter ATA, again, a sting loop and brass nock sets to avoid the pinch.