Go to this thread and you can set your maps up like this.
http://www.bbcboards.net/lowrance-garmin-sonar-gps/461186-navionics-shaded-depth-2-a.html
Type: Posts; User: golson
Go to this thread and you can set your maps up like this.
http://www.bbcboards.net/lowrance-garmin-sonar-gps/461186-navionics-shaded-depth-2-a.html