Question for you guys. My dad who is just getting into bow hunting is in the market for a bow. He cannot even pull back my 70 lb bow. I told him we need to look for a 50-60 lb bow and set it at 50 lbs and work his way up to a higher poundage. He is 150# and not weak by any means, but he is working out I am just curious as to some back exercises for increase strength for drawing a bow. I recently got a 60 lb quest bow for him to try and pull back and practice with and he could pull it back but it took everything he had and he was done. So 50 lbs might be pushing it. I have a bowflex and do a lot of rowing and lat excercises and he has free weights at his house. I know a lot of it is form, but wanting some exercises for him to do. Thanks!