I'm curious about how accurate the mapping programs are for inland waters. Has anyone else seen a problem, either on santee cooper, or other lakes? I've owned a Garmin and now a Lowrance gps, but the channel markers on the Santee Cooper lakes, Marion and Moultrie, are not where the map shows them to be, sometimes they're off by 1/4 mile or more. When I had the garmin "Recreational Fishing with Hot Spots" program, I notified Garmin, and they said the mapping was done by someone else, and all they could do is forward the information to make them aware of it, and hopefully a newer version would come out with corrections. So, I was with a friend who had a "Lowrance with Navionics Hot Map Classic" software, which I now have, and his was the same way, at least in Lake Moultrie. I also have the "Fishing Hot Spots Elite" software for my Lowrance, and it is the same way, almost none of the channel markers are where the map says they should be, and the channel from the 'brickyard' area across the lake and down to Randolph's landing even has the colors (red/green) reversed. As far as contours go, they are fairly accurate. My salt water charts show the marker buoys in coastal waters just where they should be, too. Now, this may not be a concern to a lot of folks, but for those of us who travel santee cooper lakes, especially in foggy or night-time conditions, it's downright scary. I took the time when I had my Garmin to mark each one of the channel markers individually, so I knew exactly where they were at night, and I'm in the process of transferring those waypoints into my Lowrance lms-337c.