Originally Posted by
Royt
When you are in either a 2d or DI view if you press the menu button once it will give you several different options, one of these is to be able to adjust your depth reading starting from the top. Once the water has gotten warm like it has here, 80 degrees plus, I know that I will always be fishing deeper than 5 feet so there is no need for me to view the water that is 5 feet or less in depth. Now when the water cools down again in the fall I will reduce this to 3 feet. It just helps your images appear larger just like adjusting the bottom depth a few feet deeper than the bottom depth you plan to fish.