Don't be surprised if your operator suggests you get a lake map that is issued by the Canadian Hydrographic maps. These maps are much superior than the hots spots in terms of detail for fishing and navigating.You should only need one map (#6214) to cover you for your trip, but it's likely hot spots has the area split so you might need two.
The maps are now more portable and water repellent so the $20 CDN is an investment.
I often tell people this same thing and even suggest they try out the hotspot map the first day or two. It almost never fails that they come in for the good map before they go out very far.
Enjoy your trip.