Split Bottom Mount
The first time I ever saw this trick, I was honestly shocked by it. It looked really cool, and it seemed like it would be an easy trick to learn. It almost made me happy just by watching it done.
I had a talent show coming up really soon, so I decided to try to get it down before then. I'm not sure whether it was just due to my lack of the "buckle-down-and-learn-the-trick" attitude, or whether the trick is really that hard, but I never got the trick down until around a year later.
In any case, this trick does take a lot of practice. It's one that for hours your hands might not want to cooperate on, but one day it will just click and you'll be able to do it perfectly. It's doubtless worth the effort though, 'cause it's definitely a major crowd pleaser. Don't give up practicing!