The other thing I did while on vacation was download the current Navionics U.S. / Canada iPhone app, which also runs on the iPad ($15 in the App Store, the dedicated iPad app is $50 as I recall) and download the chart data for the entire Great Loop. Then I started entering routes. Each route can only have 99 waypoints (hey, this is a $15 program for your phone, not a $5,000 dedicated chartplotter!), but you can have unlimited routes, so I just started a new route where each prior one ended. This app and the Navionics chart data are AMAZING. It has ALL the chart data needed for the entire Loop. So far, I have entered routes for Cape May to Georgian Bay. The detail on the Trent-Severn is wonderful. The chart data is the same data that is on the expensive Navionics CF cards that my Raymarine C-80 uses, and running on the iPad in 2x mode, it has great resolution. I will probably spring for the dedicated iPad version when we Loop. I had used the prior U.S. only Navionics app on the boat on our iPad, and it worked great with the built-in GPS, so delighted they have added Canada! Highly recommended!