I just got a Humminbird 788ci HD Combo, and it is great. Because of the location where the unit is mounted, I had to go with a Humminbird again.
I did get the Navionic Hot map East , but when John and I were looking at the GPS, we didn't look at the deliniation. It is 3 feet and not 1 foot. For Squam. I think three feet is better, otherwise, the screen would be full of lines. But I will check with Navionics to see if it is suppose to be one foot.
Lou look closer, on the Lowrance 1' does not show every foot, it may be 2 or 3 feet in one area and 5 or 6 in another and depends on what zoom setting your using too, but if you look close you will find maybe 1'. If they showed 1' the whole lake it would be all lines, they did it right.