How do you do a 360 on mx vs ATV untamed for the wii?

You have to press, before you come onto the ramp the keys C and Z at the same time and hold it, then when you come immediately off the ramp you have put the cursor on the nunchuk (if you want to do a threesixty on the left side) first to the right and then fast to the left and keep it there, (if you want to do a 360 on the right side) you have to make the same but there you have to put the cursor first to the left and then to the right