Abstract: Surf tracking and monitoring systems and methods. Surf tracking systems that incorporate a variety of sensors, including acceleration and rotation sensors, to track and monitor various aspects of a surfer's activities while in the water surfing including: depth of a duck dive, criticality of a turn while riding a wave, paddling efficiency, and so on. A motion capture element having the various sensors is affixed to the surface of a board. A computing device is used to interpret information from those sensors.