1 point per roll, minimum of 3
Timer starts when head hits the water, each roll is considered completed when head comes out of water. No penalty for doing extra rolls past the ten second time allotment.
Standard rolls for speed with the same three roll minimum. It can be hard for the contestant to hear when the ten seconds end so top competitors often do an extra roll or two to be sure. A score of four is typical. Five rolls is impressive. Six rolls within ten seconds is borderline impossible.