Everytime I go fishing in a new area, I create a map of the area using the Garmin MapSource Cd / Program on my PC, transfer it to the data card and put it into the 178c.. Is there anyway when creating this map/data card that I can place a line on the chart to show on off limits or no-fish area? I have tried creating routes and transferring them, but the lines won't appear on the 178c. Maybe I am trying to do something that is not possible for this unit.. any comments, information, or ideas would be GREATLY appreciated. The specific area (line) that I am trying to create is the buoy 10 line on the Columbia river
