With a Hill style longbow when one varies the cant, the rotational distance of the arrow above the knuckle is much samller then it would be with a modern recurve, especially if that recurve has an elevated rest. If one always shoots the same recurve, this would probably get adjusted automatically. However, if one normally shoots a longbow, when that same person rolls a recurve over the arrow will tend to point much further to the bow side of the shot. In Hill's case his bow was pretty much only curved at the ends, which would lead me to think that it was simply touchy to his particular shooting variations. One test that I did was to shoot a Bear SK with just the ring finger. The arrow flip-flopped like crazy. I tried the same ring finger release with my favorite Hill style bow, a Hill Halfbreed from a Hill blank, the arrow flew to the same place with the same good flight as when released properly. Comparing the recurve ended bow that Hill referred to against a modern recurve is not apples to apples, but then there are a different set of variables that would need to be considered, which once again would fall in favor to the Hill style bow for varied hunting shots. I would like to believe that Hill was very objective with his archery choices. He, most certainly, always seemed to know what he was doing.