| CPC B63H 21/21 (2013.01) [B63B 79/10 (2020.01); B63B 79/40 (2020.01); B63H 21/17 (2013.01); B63H 25/38 (2013.01); G05D 1/0206 (2013.01); B63H 2021/216 (2013.01)] | 20 Claims |

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1. A watersports boat comprising:
port and starboard drives;
port and starboard propellers turned by the port and starboard drives;
a rudder operable to impart a turning motion to the boat;
a user interface operable to receive a surf mode command; and
a controller in communication with the user interface and the port and starboard drives and configured with machine-readable program instructions to, responsive to the surf mode command,
determine whether a speed of the watersports boat is within a speed range, and
if the speed of the watersports boat is within the speed range, impart a rotational speed differential to the port and starboard propellers.
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