It deff. helps to have allready done a raley; build off of that.
Anyhoo, hit the wake like you would for a raley, so take a wider approach and a taller body position to get that leverage against the rope, which gives you that catapulting motion youll need. As you stand tall through the wake it helps to bring your front knee up, as you would for a front flip, this helps you roll into the backside rotation.
Now, unlike a raley its inportant not to extend your arms completeley off the wake. With bent arms your able to create momentum to stomp the 360.
As you roll into the trick off the wake, it also helps to try to move your arms behind your head. At the same time, look back-side under yout trailing armpit to lead the rotation as well as spot your landing.
If your having trouble landing try pushing the handle straight down toward the water to naturally bring your knees and feet in for the landing. And dont forget to land with the board in front of you and on edge.
Let me know how it goes or if there or any other problems. Good luck - its a sweet trick