I don’t know how to play the guitar, even if I’d tried a long time ago. The strings hurt my fingers and I gave up! That’s why I have never used any guitar strap locks, nor anything which is related to guitars.
I wish that my kids can pick up more musical instrument when they are ready. Right now, only my boy is learning the piano while my gal hasn’t picked up anything yet.
Hopefully, she will be ready in another year.