Scrubba
Optional
Gumbi
The Scrubba is the Sailormoon combined with a Touchdown Raiz. Or a tapping Gumbi.
Once you know how to do the two prerequisites, TD-Raiz and Sailormoon, this trick becomes very easy.
01 Sailormoon
The first progression is a sailormoon. It should be one where you flip over a little bit rather than going from side to side. That will make the transition to the Touchdown Raiz easier.
02 TD-Raiz
The hardest part of learning the Scrubba is learning the TD-Raiz. It can be a very confusing trick at first. Make sure you have a comfortable Raiz before you learn this.
Tips
Keep your chest up and open the entire time. Do not hunch in as you perform this trick. All the same technique that applies to the TD-Raiz, also applies to this trick.