'It was all broken': Surf star opens up on 'scary' reality of winning on world's toughest wave

Australian surfing superstar Molly Picklum has revealed she conquered the powerful Teahupo'o wave with a broken surfboard to claim her second win of the World Surf League.

In a clean sweep for Australia on Thursday, Picklum and Jack Robinson both delivered epic performances in the final of the Tahiti Pro, with Picklum taking another big step towards a maiden world championship and Robinson blitzing his way into the WSL finals.

In the final event of the regular season, staged at the dangerous Teahupo'o reef break on the coast of Tahiti in French Polynesia, Picklum landed a significant blow on her world title rivals.

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Widely considered to be one of the most dangerous and deadly waves in the world, Picklum acknowledged that after getting "smashed" by the surf, a local person helped fix her broken board, which she later used to compete.

"This wave, it beats you down and humbles you, for sure," she told Nine's Today on Friday.

"In the warm-ups leading up to the final, I had a bunch of wipeouts and broke all my good boards.

"A local guy actually went and fixed the board that I was riding [in the final]. It was all broken.

"So, you get smashed, you get tired, you get strained muscles, but you turn up and put it all on the line for the big day."

Picklum explained that winning at Teahupo'o is unique because of the immense fear and risk involved in riding such a wave.

"That's why it's so special for me to win, just because it's so scary to take off on any wave," she said,

"To do that in a heat, and to do that for your country and your rankings, it's just so cool to do it in the most special, critical moments, and those waves will come my way."

The women's world No.1 defeated reigning world champion Caitlin Simmers in the final, dominating 17.26 to 4.94.

Picklum executed three eight-point rides while Simmers' chances took an early hit after she wiped out on what could have been a 10-point wave.

The 22-year-old had already secured the No.1 seeding for the finals by reaching the final at the Tahiti Pro.

The WSL finals will be held in Fiji, beginning August 27.

Picklum, who hails from the NSW Central Coast, conquered the wave she feared during last year's Olympic Games.

"I felt like I earned my stripes this event," she said after becoming the Tahiti Pro champion.

"It was sick, so nice just to make a few waves and not get flogged. What a special place Tahiti is, you just feel the energy. It's where the dream comes alive. I'm so happy.

"I'm so psyched. I'll go home for a few days, pack a few boards … I broke so many here, and head over there and enjoy it for what it is.

"I finished No.1 this year, it's a massive step in the right direction, and hopefully I can get that cherry in Fiji."

Robinson's performance capped an incredible day for the Aussies.

The 27-year-old needed to win in Tahiti to secure his spot in the top five who will compete for the world title in the finals, and he did so in style.

He propelled himself into fourth on the WSL rankings, while bundling out countryman Ethan Ewing in the quarter-finals, who fell to sixth spot.

Robinson stunned rival Griffin Colapinto with a 9.50 opening wave, before emotional scenes as his wife and son celebrated with him in the water.

"I'm right where we're meant to be," he said.

"I had a mission and I went for it. I'm very blessed to be going to Fiji.

"The whole event, I was just doing me, just free. I was free."