Performance
A Korean-born national coach codifies the technical and mental model he carried through Korean, Australian, and American elite archery systems.
The author frames his method as biomechanical rather than as a national style. Good form comes from correct bone alignment and the best possible use of the muscles. On this view there is one correct way to shoot, and it is the most efficient one, wherever it happens to be taught.
A method built for precision competition assumes the performer has time to set up carefully and execute each attempt. That assumption fails where timing isn't yours to choose, as in hunting. A technique can be excellent in one context and unworkable in another.
The method insists that the trunk's core muscles must be engaged throughout the shot. Fixating on a single famous source of strength, such as the back muscles, makes people lose sight of the other elements that supply power and stability.