Its all in the hips, really have to throw the bars round, and swing you hips. carve into them abit, and bend your knees to get more height and have more spinning time. It really is just practise, I'm starting to get close to 360's on a 1060 pure, cos I do them all the time, its just technique, I find going a bit faster can help, improves confidence too, its well cool when you can pop them flat out. keep at it!