The T-stop and spinstop are both techniques for stopping on inline skates without using a rubber brake pad. In the T-stop the skater glides on one foot and then drags the other foot perpendicularly to the direction of travel immediately behind the gliding skate. It isn't that hard to do, but is said to be more useful for speed control than actual stopping. Since it uses friction against the wheels on the dragging skate, the T-stop also eats wheels up pretty quickly. A spinstop converts the skater's linear momentum into angular momentum in a (hopefully) controlled spinout. It is mainly useful for coming to a complete stop from low speed. A skater travelling quickly who wanted to stop without using the brake could T-stop to slow down and then spinstop. There are lots of other more complicated ways to stop without using a brake, each more or less useful depending upon circumstances.