Catching a wave

The art and work that goes into simply catching a wave is crazy. There is so much physics. The waves that we create while in the water and the torques that we create to propel ourselves through the water is really cool. Every time I stick one arm into the water and push or pull myself thorough the water i create a rotational force that propels me through the water. In order for me to travel in a straight line i have to use both arms one after the other so that with each stroke i counter the other with a stroke of my other arm. That's some real fun in the sun.