This is a pretty cool trick to learn and after you are good at it you can use this as your way of stopping.
Go at a fast speed the faster the better but you have to feel good with the speed. Put your feet overtop of the bolts of your trucks, both front and back foot. With you front foot keep most of your weight on it then with your back foot drag the wheels doing a 90 but they have to drag on the ground or else this trick doesn't work. Then when you finish the 90 lean back and stretch your feet out. Slide until you have lost all your speed then your done. This is a hard trick to learn for most people but if you can do it easy it can be used often and can be done easily.