1) For this trick you need speed. Speed helps you rotate faster.
2) So roll along at about mach 10 with your back foot in the ollie position and your front foot just behind the front truck bolts.
3) Start to wind up the opposite direction you want to spin, so turn your shoulders toward your tail since your going frontside.
4) Now snap your tail and ollie but at the same time scoop the tail around in front of you, this is all done with the back foot. Unwind.
5) Now you should be riding switch or backwards or fakie or whatever.
Hint ) You need to go a full 180 degrees around; not just 178, or 179, 180 god-dammit, other wise you wont keep rolling.)