Just use the one that works best for you...
I never cared much for the Weaver stance. It just didn't work for me.
That is pretty much what our trainers told us. We had about half and half Weaver and Isosceles. My youngest son has done quite a bit of training for civilian, military and law enforcement. Some departments will prefer one over the other, but when no such constraints exists, he uses what works best for the individual.
:laughing:If you happen to be able to hit the target pretty consistently standing on your head with one eye closed, you can become the "expert" for that stance, and try to teach other people that's the best way to do it. And maybe get paid for it.
Young kid working the pistol range at our local Bass Pro shop told me the Todd Jarrett way was best. He didn't say it was Todd Jarrett, but that's what he was describing. Now I'll concede the fact that Jarrett's undoubtedly a better targer shooter than I (he's had a lot more practice), and I tried his method; nothing wrong with it, but it ain't for me.
Funny you should mention that, but my son would shoot his handgun upside down to demonstrate sight picture, trigger control etc. This was taught to him and other trainers by a retired FBI Instructor. It impressed people, but didn't really mean much.
His boss at one job absolutely insisted on EVERYONE going through the class to follow to the letter the steps that worked best for him. I took a course and absolutely hated it and couldn't hit worth a darn as it went counter to years of training that conflicted.
What might work well in IPSC or other forms of competition does not necessarily work will in that
OH S**T moment when you are off balance, scared, dodging, running for cover or whatever you are doing.
I do believe in the adage, "you fight the way you train"; just not sure dogmatic methods will serve you well when needed.
Jim Cirillo probably had more real life experience than anyone due to his years on the NYPD Stakeout Squad, but from what I saw of his technique it wasn't like something I would use nor the "experts", but it sure worked for him.
Of course no better than I can shoot, I might be better off with a nerf gun now; just some random thoughts of limited worth.