Here you go. The memory palace.
http://en.wikipedia.org/wiki/Method_of_loci
"Using this technique a person with ordinary memorisation capabilities, after establishing the route stop-points and committing the associated images to long-term memory, with less than an hour of practice, can remember the sequence of a shuffled deck of cards. The world record for this is held by Simon Reinhard at 21.19 seconds"
Obviously there is no possible way to KNOW that these folks are actually USING this technique other than their own statements that they are. But after INTRODUCTION TO and PRACTICE with this method they are able to perform feats of memory that are well above the ability of someone who has not been trained in this method.
So, here we have a completely mental system that has been proven to work to the satisfaction of scientists for improving memory. But when we have an objective system of alignment that relies on physical perception leading to body position and ultimately to cue address we dismiss that as placebo?
Instead of taking subjects at their word based on their demonstrations we look to tell those subjects that they have deluded themselves and there is some other reason for their improvement than the method they have been using.
I don't understand this. But anyway, I could say that the memory palace doesn't work simply by saying that I tried it and can't get the results. No one can look into my brain and know that I am not even trying. Well with FMRI it might be possible to actually see that now as they can image the brains of people who are able to perform those feats and compare those to people who can't perform them. The assumption would be that anyone TRYING to use the Memory Palace system would have some brain activity in the right spots.
But back to CTE - this is an objective approach with a clearly defined goal, to put the cue on to the shot line. That's totally a fail/pass result. If you say to me use whatever method you want and get the cue to the shot line and I do then it's a pass, if I don't it's a fail.
So it seems to me that you can figure out a simple way to prove CTE doesn't work because using CTE ought to lead to more failure than success in getting to the shot line IF in fact it does not work.
And you should be able to demonstrate this on video.