There are characteristics that make certain bows fit a persons style/technique of shooting a bow. Fred Bear filed down the shelf until the arrow was riding right on top of his hand. Many people who shoot longbows shoot too stiff spine arrow which aggrevates shooting left with an already noncentershot bow. Having a bow and arrow setup that is grooved in and shoots where you look is a combination of good arrow flight, consitent technique and proper practice. If you change a variable in the equation, shooting diffrent weight and material of the arrows, you have to adapt to that and it takes some time based on your experience level. Some people are simply blessed with an ability to shoot with great hand eye coordination. Keith Bain is someone like that, he has told me that from the first time he shot a longbow, he could just shoot it where he looked. He does not shoot recurves often, but they are not a problem for him either if you have ever seen him shoot. The rest of us have to work at it more. Many people fall into the trap of it is the bows fault, when more than likely an error in form is happening. Most of your really good barebow shooters get a set up and stick with it. Consistensy in technique and equipment is how people get to where the bow is shooting where you look.