Another way to look at this that I just thought of:
Me: Doctor, when I do this (raising my hand) my arm hurts.
Doctor: Well, don't do that!
It's a bit snarky, but it's something that works for your situation. If something isn't working, don't do it the way you're doing it. Everyone is different, and unless what you're doing is dangerous, there's no reason not to do it. And since trigger finger placement isn't a safety concern, do what works.