I've been doing some experimentation on my own, trying to improve my swing. Here are some of the things that I've been kicking around; nothing new, but verification for me personally. Please tell me what you think:
1. Feel will kill you everytime, unless you can confirm the "real" that it corresponds with. Whatever you feel like you're doing, be sure that it corresponds with a dynamically effective swing, and nurture THOSE feels.
2. Lag pressure is monitored by the hands (except in PP4), and is produced by the pivot and gravity.
3. Trigger delay is a result of a properly performing pivot.
4. Video can lie, and static photos can lie even worse. It's about dynamics and alignments, not positions. Trying to look like a tour players swing sequence can cause major problems.
I came to all of these conclusions by "throwing" the club from the top. That's what it felt like. And I mean throwing the clubhead as soon as I could. I was very leery about doing this, because I'm terrified of throwing the club away. But that wasn't the case. I maintained the angles, but more importantly, I felt pressure on pp3 through impact. Also, in doing a drill designed to prevent casting, I discovered that I was able to maintain my angles, and I was making solid contact. The difference I felt was that my right shoulder was moving down more, and I felt more hip slide. I could feel pp3 solidly for the first time as well. Then, standing in front of a mirror, I purposely tried to throw the club away, wrist breakdown and all. The only way I could do this was to freeze my pivot. It was an interesting change in feel, but it allowed me to actually understand a lot of concepts that were only concepts to me, up until that point.