Yeah nose pinch RC works better for almost everyone, but I found the hand through finger one works just as well IMO. About that 9 thing though, I've never heard of that as an RC, but a couple days ago I found a bracelet that says DREAM. I've noticed in my dreams it's not on my wrist anymore, presumably the longer I wear it the more likely it will be to show up in my dreams. Funny though, I never heard of that changing text/symbols thing, but that's the reason I started to wear the bracelet, I figured if I could change the text, or make the text disappear then I was dreaming.

It doesn't matter the RC you use, so much as the belief it will work. People often use telekinesis as an RC, if you really try to imagine/believe it happening, it will in a dream. That and being serious about asking you if your dreaming. It's happened to me where I do an RC and it works like it would in RL cause I got into the habit of expecting it to fail, and doing it autonomously.