My guess for Hogan wanting NOVICES to be remove the right forefinger and thumb off the shaft to practice was to teach them not to have an over active pp#3. PP#3 can cause big time serious throw-away if done wrong. No doubt Hogan rip many snap hooks in his day.
Peggy Kirk told us in Pine Needles that "Ben" told her that the right forfinger- pp#3 to us- was very important in ball striking. Let it be pushed- don't let it push.
6b can you elaborate please as I feel that this may be part of my current problems.