Hi there, I think it's still too early to supply diagrams or photos indicating exact spots, for the following 2 reasons:
(1) Whereas my success rate is no longer zero, it is still just approximately 10 percent, i.e. 1 out of 10 attempts at locating the "sweet spots" on both sides simultaneously is successful at present. So I need much more practice here.
(2) As mentioned earlier, I am presently able to attain a near loss of consciousness, but not full unconsciousness. The sensation is one of detachment and mild euphoria, akin to that said to be experienced by teenagers when they play their "fainting game". So here too, I need a lot more practice.
As concerns the approximate location of the spots:
Along the vertical axis, the spots are located in the upper third of my throat, entirely in contrast, for example, to the tests conducted here (where the pressure was applied to the lower third of the throat):
https://pmc.ncbi.nlm.nih.gov/articles/PMC3848716
I'll occasionally continue to try the lower third too, but am much more impressed by the upper third.
Along the horizontal axis, it's best to start applying pressure starting at the edges of the thyroid cartilage and slowly working your way outwards toward the carotid arteries. Don't go too far out or you will start constricting the jugular veins too, which is not a good idea, I've heard.
As I also mentioned earlier, use of both thumbs alone is enough for me to attain the state of detachment and mild euphoria described above, so I'm guessing that in the final setup - whether ratchet strap with bags or blood-pressure cuff with pads, or whatever else - the bags/pads will not need to be very large, and would indeed become counter-productive beyond a certain size.
My hands are positioned as shown in the attached photo, except that the thumbs are free and used at the front to apply pressure to the throat.
View attachment 196675
I'll continue providing updates as and when important benchmarks are attained. Good luck!