Kayaking or open canoe? There is a differentiation. The quals have changed too, so you would need to specify.
Also what level are the paddlers at and what grade water will they be paddling?
EDIT: I take it after a bit of googling you will be open canoeing on flat water in Ontario, Canada?
If you use google you will find local canoe guides. Six

ne should be fine on flat lakeland, but check with local guides , as I dont know the exact area in which you are going. Persoanlly if you can get funding I would use a local guide - they know all the best spots and provide a bit of local knowledge.