Hey LadyJ ..
Post on Wakeboard New Zealand Facebook page, I'm sure plenty of peeps will be happy to help out with a tow.
Also, keep an eye on
www.wakeboardingnz.co.nz for schedule of our upcoming 2015/2016 comp season.
Heard 1st comp is early Dec at Orakei Korako
http://www.orakeikorako.co.nz/
Must lakes to ride if you're in the the North Island are Karapiro, Maraetai (Mangokino) Ohakuri and Orakei Korako...
Places to visit, Rotorua and Taupo...plenty to see, lots to do
Good luck, pm me if you have trouble getting hooked up, I have plenty of contacts with boats who would be happy to help