Now that I am retired I bought a used boat and started fishing on Lake Lanier earlier this year. I upgraded the electronics on the boat to a Garmin Echomap Plus 73SV sonar/gps unit. I am getting the hang of reading the charts and the navigation has one foot contours of the lake. My prior fishing experience back in the day as a teenager was on small farm ponds. Needless to say, Lake Lanier is huge in comparison and to be successful you need to locate structures often in 20+ feet of water where the fish hangout. To speed up the process, I an looking for a source that might have a list with GPS coordinates for the structures (brush piles, stump fields, timber, rock piles, roadbeds, etc.) that would be available in a format that I can import to my Garmin unit. Any leads or suggestions are welcome.