The rider hits the wake and allows his board and body to swing up over his head while he crosses the wake.
Rider then swings the board and body down and lands on the opposite side of the wake.
Same as heelside. It's also been referred to the rotation direction while spinning. Initiating your rotation by turning your back to the direction you are traveling, same as blind. Rider approaches the wake carving the heelside edge of the board, then rolls the board up over his head and lands in the same direction he started. Same as backside roll except rider lands his board in a fakie position.