I contacted Lowrance and asked them the question about the US / Canada boarder vanishing when I zoom in. They stated "Since you are not going to be using this HDS-5 in any Salt Water or Ocean
waters, then you would want to purchase either the Hot Maps Premium or Hot Maps
Platinum. The Premium will provide a detailed 2D map and the Platinum will
provide the 2D plus a 3D map as well"
Is anyone using any of these maps? What do you think? Are you satisfied with them?

Fishon51- The only thing that i heard was the last time the lake didn't freeze the fishing was not good that year. I hope that information is incorrect.