I think that you bring up an important point here, Otto. I believe we use the term “subconscious” too loosely. I am as guilty of this as anyone. We all have to WANT to let go of the string before we shoot. However, wanting to let go of the string is not the same thing as triggering the shot. There are two important things about triggering the shot: it must not be triggered prematurely, and it must be a surprise if it is to be a successful shot; therefore, it happens at some point after deciding that we want to shoot.
You say that when people subconsciously trigger the shot, their release happens prematurely. That may be true; I don’t know enough about the subconscious mind to debate the point. However, I do know many people who do not use an external trigger who have beautiful surprise releases, including Terry Green and Rick Welch. Terry uses a dynamic release, and Rick uses a dead release. Terry may increase back tension until the shot is triggered; Rick “waits for the shot to go off.” I even include myself in this category, although I am nowhere near their proficiency. Maybe we are using some part of our unconscious brain other than the subconscious to trigger a surprise release? I think to avoid confusion in the future, I will refer to these successful surprise releases where no external trigger is used as an internal trigger, leaving the term subconscious trigger to those who understand the subconscious mind better than I do.