I have. My record is like 3 minutes. I also did it to show how to do something in English class, and apparently, I am the god, lol. Everyone was amazed that I could do one.
Well, it's actually easy when you know how. Formulas and all. My best was about 1 min 45 I think?
I'm an amateur and will stay as an amateur for as long as I can remember.
Yeah same as Tearsh, my record is 3 minutes, can't get any faster than that =.="