"I am familiar with CTE/ProOne and my own system the SEE-SYSTEM.
All I can say is, that both systems throw your game off as long as have not automized them and both systems make you a way more consistent player when you have automized them.
On top, both systems help you to find your personal rythm and pace and help you to keep them during your matches- these 2 points, as well as the pre shot routine that is always identic using these systems are very important pieces of that big puzzle called "THE ZONE"Using ProONE/SEE-SYSTEM helps you to get into the zone more often and to stay in the zone longer as you don't have to think about anything anymore-you just see it and do it!
After having experimented with TOI for around 80 hours I have implemented TOI into my SEE-SYSTEM by creating adjusted "TO-sighting lines" into my SEE-SYSTEM and was able to break and run 8 consecutive racks in 9 ball playing a money game last Wednesday night at my pool club against another player. Ran a five and a six pack some weeks ago - so 8 racks is my personal record

for now (happy)
All depends on the discipline of the playerin my humble opnion!
-Has he got the discipline to understand and learn the system
-has he got the discipline to adjust things until they work in more and more situations (different strokes/different acceleration/different distances/ using deflection or deflection only etc.
-has he got the discipline to work on it-has he got the discipline to "forget what he learned" after a certain time and just doing it
-has he got the discipline to just trust it while playing a match and just doing it while observing his results without evaluating it. Writing down situations when something did not work out as expected and training them the next day
adjusting what needs to be adjusted to work for him.
-has he got the discipline to just enjoy what he is working on- each time he is at the table on his own
just my 2 cents
Ekkes"