hey i rented jet ski last weekened for my bday at wasaga beach...which costed 90$ for one hour where we were alowed to go on our own and hit the waves and about 10 mins with the trainer telling us what to do and what not to do...it was a really fun experience and all you need is be over 18 years old and a valid g2 license...and of course 90$ they are called wave runners not sure about the address but its in the main strip of wasage beach here is a site if you want to look into it
http://www.day-trips.ca/content/wasaga-waverunners