I go 4 wheel driving in areas that border on areas of water catchment for dams, and the fines for going inside these areas are very high. These areas have exact boundaries which I already have in google earth (KML files). I need any Garmin GPS 5-7 inch screen that I can upload these to, so that when I go out in the forest, I don't accidentally go into illegal areas. (not sure what this function is technically referred to)\n\nCurrently I have a 12 year old GPS (nüvi 2797LMT) which is great, but I can not seem to upload custom areas or tracks to this GPS through Basecamp etc.\n\nAny absolutely basic GPS would be totally fine, I just need one with this single function. Anyone got any recommendations? I will probably buy a second hand one cheap. Don't need anything fancy.\n\nThanks.