What are some easy and effective ways to set up a land nav course on my own to practice for ROTC? I would like to be able to go anywhere, including national parks to do this. Is a GPS and mapping software required to set this up, or is there a good app for my smartphone that can be used for this purpose? I also want to practice terrain association, and would need accurate printed maps and everything set up for MGRS. Mostly, I have ran into compatibility issues, which can be a bit of a headache. If anyone has a good technique for setting land nav up I would greatly appreciate it. Thanks!