Marine Electronics Tips

How to Custom Map Spots with Humminbird AutoChart Live

Chances are you’ve encountered an unmapped lake, spot, or even a map but with poor accuracy and detail. Wired2Fish’s Ryan DeChaine faces such a situation on a small lake and walks through how to map an offshore hump using Humminbird’s AutoChart Live and Zero Line SD Card.


DeChaine uses a circular survey method instead of traditional transects to quickly and accurately map the structure. He then describes how to display and adjust bottom hardness data on top of the custom map; bottom hardness in conjunction with accurate 1-foot contour intervals reveals previously hidden spots on the spot, giving you an edge with your private lake map.