you got it in one word. blind! you gotta do it all the way out and all the way back in again, if you skip to natural for even a bit more than a second chances are you wont win.
dont forget to claim your blind riding skills on and off the water. pump your fist in the air the whole time just to prove u can ride with only one hand aswell. then once uve made your return onto the beach walk up the the nearest bunch of people and tell them all about how good u are at riding blind and how u were just killing it out on the water. then go upto the judging panel and tell them how good u are. ur sure to win. i guarentee.
Nah doesn't matter as long as your in bindings. You gotta perfect the biig jump and one footer in bindings plus the blind landing. It's all about progression