If you make it over to vancouver island and need a pull in the summer, drop me a PM.
You should find lots of riding in kelowna on okanagan lake (I think there is a boarding school there), Kalamalka / woods lake, and I think the waterski club used to run out of Duck lake. Check out the BC waterski/wake site for info on clubs/schools etc. http://www.wswbc.org/
It lists about 5 schools in the kellowna area.