In this video Kai says that he surfed 20ft swell with a Bic board...it makes me want to give up on life and its just like WHY! Anyway skip to around 1:29 to see what im talking about then he doesnt even catch a single wave when its only 3ft...

https://www.youtube.com/watch?v=283M3oYliLU

Dont hate me for this, its common sense.