Tauranga's Luuka Jones also had a tough finish to her weekend, after finishing 23rd in her K1 semifinal and last in her C1 semifinal.
"I had such a nightmare today — I haven't been feeling good in my C1 and I've been playing around with a few things in it but haven't found a solution," Jones said.
"The K1 was a lot better and I was paddling okay but I had a big mistake in the middle which was pretty costly."
Australia's Jessica Fox brought up a winning double and Germany's Sebastian Schubert broke through for his first gold medal in the slalom finals.
Fox could not have been more impressive in the women's C1 final, blowing away the field to win by more than seven seconds in cold and wet conditions.
Her final time was an error-free 106.34, with Czech Tereza Fiserova finishing second in 113.96. Great Britain's current world champion, Mallory Franklin, finished third.
Schubert has to go back to Augsburg in 2014 for his last World Cup gold medal, but showed his very best form to defeat a quality field in the men's K1.
Schubert posted a time of 92.06 to edge out Poland's Dariusz Popelia, who landed a two-second penalty, by 0.71 seconds. Britain's Olympic gold medallist, Joseph Clarke, won the bronze.
The women's extreme kayak gold medal went to experienced creek-boat racer, Sage Donnelly, of the United States. Brazil's Ana Satila won the silver, and Russia's Alsu Minazova took the bronze.
There's little time to rest for the Kiwi contingent, who have left for the next World Cup in the series in Poland.
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