guys, i fish in the La marsh and am considering getting a mapping gps (like a garmin 76 or 76s) to help in the case of fog/getting caught after dark. I am interested in any first hand knowledge of the blue chart system as far as detail for fishing these areas. I looked at the web sites, but I am not sure that the charting database has enough detail to show all the pipelines/turns that are involvedin a marsh area. Any ideas on blue chart?????