Since Dr. Dave is a well-known authority on many pool topics, one can read the following link for a general overview of CTE aiming systems, with comments by other people too:
http://billiards.colostate.edu/threads/aiming.html#CTE
According to Dr. Dave, the BOTTOM LINE OF THE ANALYSIS :
Any align-and-pivot system like CTE requires changes in alignment and/or effective pivot length as the cut angle and shot distance change.
Personally, I think DAM is still a much simpler approach to basic center-ball aiming than any pivot-based system; although, like anything, it does requires practice. Regardless of which "aiming system" you use (even if you just "see the angle"), you still need to practice to develop and improve your "visual intelligence" and consistency, and you need to actually focus on aiming the shot. It also helps to have an effective and consistent pre-shot routine. Many aiming systems can help some people do this (for more info, see benefits of "aiming systems"). Also, when you use English, you need to compensate your aim to account for squirt, swerve, and throw.
And he essentially says here that it's beneficial. This thread is however about PROFESSIONAL opinions of the systems and our discussion of it. Would you be so kind as to show us Mr. Alciatore's professional billiard accomplishments? He is a highly regarded documentarian of the various physics of pool but I don't see where his opinion of these methods, which he has no video proof of, fit into this discussion. I very much love to see Dr. Dave linking to his excellent videos and can watch them for hours. But on this subject I cannot find a single video that Mr. Alciatore has done to back up his opinions on the subject. I will admit that I could have missed it so I will rely on your help to point me to it if such videos exist.
For Roger Long's comments about CTE, you can read the following articles:
CTE has had a long sordid history involving years and years of online pool forum debates. For more background, see Roger Longs series of articles on the topic: "CTE: Miracle Fix, or Mystical Tricks?" (Round 1, Round 2, Round 3).
http://www.azbilliards.com/rogerlong/roger4.php
http://www.azbilliards.com/rogerlong/roger5.php
http://www.azbilliards.com/rogerlong/roger6.php
Mr. Long does not know the proper techniques of CTE, nor does he know the method Mr. Shuffett teaches as far as I know. So it's a bit presumptious of Mr. Long to write any sort of article on the value of a method he himself does not understand. I would like to say that I do not know if in the interim between writing this article and the present time if Mr. Long has aquired the knowledge of CTE. I do know that Mr. Long is a BCA certfied instructor and that many of the master instructors who certified him are also teachers of CTE methods. So perhaps the question of whether CTE is of value should have been posed by him to his fellow instructors. I would have enjoyed an article written from that perspective.
Lou Figueroa wrote a detailed review which can be found at the following link: http://forums.azbilliards.com/showpost.php?p=2871644&postcount=77
The entire thread can be found here and makes for interesting reading: http://forums.azbilliards.com/showthread.php?t=221106
And Mr. Figueroa is a long time opponent of any sort of aiming systems. Prior to Mr. Shuffett's DVD coming out Mr. Figueroa was busy labeling Mr. Shuffett a con-artist, a snake-oil salesman, and similar unflattering characterizations. In the review he dismisses the content in the first few minutes.
But the telling part is the bottom line:
"For me, in all honesty, if Mosconi hisself came back from the grave and told me this was the greatest thing since sliced bread I’d tell him to go back and take a nap. This one is not a keeper, for me, and if anyone wants to buy a lightly used copy for $30, shipping included, please PM me for a PayPal address.
Lou Figueroa
all the above
JMHO, of course "
So, ask yourself how any person on the earth can possibly have any influence on Mr. Figueroa's opinion if even the great Willie Mosconi would be told he is wrong by Mr. Figueroa. That Mr. Figueroa would write a scathing review was the expected result. That Mr. Figueroa would take the time to try it on the table was hoped for, that Mr. Figueroa would invest some time to take the free phone support offered by Mr. Shuffett was also open to him. He did neither as far as I can tell from the review.
So honestly it's very difficult to accept the review of a known opponent who won't do even the smallest amount of table time to try the methods on the table. Which is why I said, throw out the low scores, which this is, throw out the high marks which would be an overzealous testimonial and take the averages.
So I am going to assume that this is your entry into the testimonials category? If so thanks and I will get busy finding the positive ones. We can let the readers decide which ones to throw out.
Meanwhile, you can start right here: http://justcueit.com/testimonials.html
These include testimonials about the aiming method and more importantly about Stan Shuffett's knowledge and ability as an instructor. Some of the testimonials are from professional players and very good amateurs.
http://justcueit.com/testimonials.html