How can bodysurfing be useful for big wave surfing?

Gnarly Bodyboarding action

Kai lenny ripping down the face of monster wave at Peahi, aka Jaws, on the north shore of Maui a few week ago. In this image the wave has not fully stood up yet but you can still get a feel for the size.

Sun lit grinder. Sun sheads light on the monster waves off the end of Long Reef on Monday morning, 6th of June, 2016. I wish there were people surfing it to show scale but the face would be atleast 20ft

During the Billabong Pro waiting period is what many are calling the biggest and gnarliest Teahupoo ever ridden. Chris Bryan was fortunate enough to be there working for Billabong on a day that will go