Van Der Beek contested his Under 16 Boys' round 2 heat which rolled over from day two. He made the most of the morning conditions to advance through his heat in second place.
Despite this being Van Der Beek's first time at the event, he said he steered clear of nerves and wanted to get out there and simply surf.
"My strategy going into the heat was actually to get fairly busy by getting a wave early on and then build from that," he said.
"But the heat ended up being pretty slow and I knew I needed to be on the best waves to get good scores, so yeah that's why I only got two waves".
Ohope surfer Jared Gebert advanced through his first repechage heat in the Under 16 Boys' division in yet another close, low-scoring battle. It was Gebert's last scoring ride of 4.67 that pushed him into second place and progression to the next round.
Both of the Kiwis in the Under 16 Girls' division were relegated to the repechage rounds after defeats.
Tegen Bishop (Christchurch) came up short to her opponents from the United States and Argentina while Saffi Vette (Gisborne) suffered a last-minute defeat, dropping to third in her heat courtesy of surfers from Japan and France.
The swell is forecast to build on day four with all 12 team members in action.