First to Jim Casto Jr.
Aiming is much more simple than people would have you think. Your subconsious is always looking for symmetry. This is why your eye will always be drawn to center of whatever object you are looking at. Your mind has seen your sight picture thousands of times and it knows whether it is right or not. It doesn't matter what aiming system you choose, when your mind gets the proper sight picture for that distance, all you have to do to keep that sight picture is "WATCH IT". Just like on the dvd, if you hold an arrow out in front of you and place the tip on a spot, it will move in a very erratic and minute pattern. No matter which way it moves, its next movement is ALWAYS back to the center. How did you do that? All you did was watch it to keep it. The movement is too minute and unpredicatable to see which way it is going next. Concentration (conscious mind) put towards aiming, does not make the aim better or make it move any less. It moves for everyone and it doesn't get better with time at full draw. When I draw back, my aim is done in less than a second. Once the aim is done, I turn my concentration to my shot activation through the use of my mantra. The subconscious is running many systems at once, balance, breathing, bow grip, and especially aiming. If allowed to also run the shot activation, enter the gremlin, and the shot activation will begin to be shortcut. So to answer your question, and I realize it is against some mainstream coaching, to aim with your subconsious, get your sight picture and then just LET IT DANCE!!!! Thinking about aiming will not make it better or move any less. I applaud you for sticking with that system for two years, but in my opinion, if you apply what you have learned those two fine instructors in regards to form, and then employ the mental mechanics of subconsious aiming and conscious shot activation, your improvement will be instantaneous and forever. I am afraid that your are working against your mind and that is a tough road my friend. Please call me so I can solidify some concepts for you.
JT