Stay low and try to use your heel as a sort of pivot point. The key is to gather rotational energy, which can be tricky whilst maintaining a realistic replay. Try to use your forward momentum and with your heel, pivot. Obviously it isn't as easy as I make it sound because I find the same problem you do.
It's all about where your center of mass is, like the above reply states, if you can pull more of your mass towards your center of mass, the faster you can spin. Like-wise, the further it is away from it, the slower you'll spin. Use this to your advantage.
Don't think that using your hands is forbidden either, you can still make it look good with your hand but like I said, stay low. Sort of like break dancing if you can imagine that.
Good luck man!
Last edited by JayStar; May 22, 2013 at 06:24 AM.