1. In sculling, you skim the back face of your paddle back and forth across the surface of the water. You need to angle the blade slightly during the movement.
2. That enables the paddle to brace itself against the water, creating a third balance point. It will help improve your balance in stormy conditions or an unstable kayak.
3. Paddle angle during the backstroke in sculling.
4. Paddle angle during the forward stroke in sculling.