Unity grinds are yet another variation on the royale grind. Put simply, learn these after you learn a royale grind for best success. A unity grind (also called an LA grind or a Buddah, depending on location) is a grind in which you slide down the object with your legs crossed, grinding on both outside edges.
If you can royale on the boot with ease, Unities should take you an hour or two to get down to a reasonable level. The first thing you want to do is make sure you land in unity position. Approach the object like you are going to royale it, and jump into the air. Lock in your strong royale foot solid on the object, and throw the other foot behind. Technically you should do both at the same time, but while you are learning its ok to stagger it a bit.
Foot position is also crucial. Before you even try these, stand still on the ground cross-legged so that you can get a feel for the proper stance. Your feet should be at least a foot apart when you land. You need to squat down just like in a royale and make sure you are grinding on the boot. While grinding in this position you have to keep your feet very firm and locked in, other wise you will end up sitting cross legged on the object.
