Watch any pro and you will see the tray position or some variation of it depending on the club etc. It is my key to power, don't know about anyone else on this db but if you are having trouble with shot trajectory or distances, try to get into the tray position, it just might be of some help.
After playing for 30 years, I finally found the position through my mentor Phil Ritson. I was struggling but since have played the last 12 years in single digit handicap.
Keeping the tray position but varying grip or ball position, its easy to alter shot shape and trajectory; one can also change face at address like Jack explains in golf my way.
I was just curious whether it fit Brian's swing philosophy or whether he had something completely different to teach.