I doubt if they will help, Ken. That type of flinch is a dog, really frustrating. When I was struggling with it so badly I was walking with Jon Kruger one day between rounds at The Meadows, at a big tournament. I told him I needed him to help me with something. He asked what. I replied, "A bad flinch". He looked me in the eye and said, "Who the hell is going to help
ME?" I did not know, until then, that Jon had struggled with a flinch for many years. He went to a release trigger several years ago and 100% cured it. But, as is typical with Jon, he uses it in an unorthodox way. He doesn't pull the trigger, then call "Pull!", then release it as most do. He calls "Pull!", then when he sees the bird he pulls it and releases it when the lead looks right. Glad I did not have to resort to a release.
As I said earlier, it still rears it's ugly head from time to time, but never as bad as it used to be. Maybe, like the apostle Paul said, it's my "thorn in the flesh".

It is a very strange condition, but one thing that I have learned, positively, about it is this: If I am
totally relaxed (carefree is the best term I can come up with) while shooting a round, it never occurs, and I always shoot my highest score, too. I never feel what you would call anxious, but those times when stress level from work is zero, my shooting buds better watch out ............ I'm hot, and I don't flinch. Go figger.
SRH