Back when Iowa had a minimum, a couple of guys in town got a draw support to go with their Herters recurves. I believe those were sold by Herters. In case some don't go back that far. In midwest small towns more people were using Herters bows than anything else. The draw support had two estensions that bolted to the bow and allowed the draw hand to brace against it while just the fingers held the string. Along with bow sights they allowed a longer holding time and steadier aim. One of their wives could hunt with a bow she could barely pull, and at 20 yards she could out shoot most of us. No one cried foul except the game warden and he was wrong, something about turning a hunting bow into a cross bow. At one time there were two such devices available.