Navionics also provides a computer based by region lake map U.S and Canada region with 1ft. contours at no cost. Like Gps Nautical Charts USA you can also purchase a version for your smart phone / tablet under $10 vs. $15 for Nautical Charts. Navionics offers SonarChart Live which give the users an opportunity to upload recorded contours to Navionics to update the Navionics maps which can be downloaded at any time providing constant updating to accurate lake contours.
An older gentleman I know gave me his ice fishing gear last year knowing he wasn't able to use it anymore due to health. Really tore him up, as I'm sure it would for all of us. Cleaned up the tipups real nice, and took this photo of one on Leech to send to him knowing they were in good hands and more importantly continue to catch fish!
I'm not in St.Cloud, nor want in for the contest just thought I'd share