Cartwheel

From KayakWiki

A cartwheel is a playboating move in which the kayaker executes a 360-degree spin within the vertical plane while surfing a hole. This maneuver starts as a high or low brace and then the kayaker ducks into the hole and comes out again on the other side. This is not any type of Eskimo roll, it relies solely on the power of the hole. It may or may not be a conscious decision on the part of the kayaker and might have the appearance of a maytagging.