Off The Loop manager and coach Glen Butcher said the competition involved two "there and back" laps on the cable, so there was not a lot of time to focus.
Butcher placed second in the Masters/Veterans division after a ride he called "pretty sweet", and co-coach Nick Oldfield, competing in the hotly contested Open Men's division, made it into the Last Chance Qualifier, but was knocked down the rankings by a fiercely competitive field, Butcher said.
Butcher said the event, at Backpaddock Lakes in Takapau, was run really well.
"We took a fairly decent size team, and we made up a fair chunk of the trophies at the end of the day," he said.
"Eve and Cam are now eligible for the worlds next year if they choose to go, and we are absolutely chuffed, so proud."
Butcher said Eve, competing in the Open Women's division at the age of 12, had particularly impressed judges, who said she was a real up-and-coming athlete.
He said himself, and the other Off The Loop coaches, Oldfield, Shannon Tuapawa and Danny Rodda, "couldn't have asked for any more" from their charges.
Cable wakeboarding park Off The Loop has been open for just over three months and has been running a Grom Squad for children since the beginning of this school term.
Currently 26 children train over two days a week, learning on-water skills, balance training, muscle memory and trick techniques.
The park has seen 1200 riders experience its characteristic loop with inbuilt ramps and features, since opening this summer.
Butcher said it had "exceeded all expectations" and they had received nothing but positive feedback about the venture.
With daylight savings approaching, the park hours would be reducing slightly in the evenings, but the action would not be stopping, he said.
"We'll just get thick wetsuits and run on through the winter, and hopefully come out even better," he said.
More features, including lighting, would be installed at Off The Loop over the winter months.
"It will be even more amazing," said Butcher.