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Do your self a favor. Get a blank card the size that will work with your unit like Pappy said. But beside doing screen shots, save any waypoints you create to that card as a backup. And do it every time you create a new waypoint. That way if you ever lose your waypoints you have a backup. I know guys who save them to their card and on a computer just in case. And at some point it usually happens to everyone.
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If you are looking for Reelfoot, I could be wrong, but I have never seen any of the brands have detailed map for it.. So what you get is an outline or just a blank screen with your waypoints.
