Hey Steve,
GPX route can be found here:
Mt Dana gpxThe lower section of the trail is well worn. Only the last 25% (toward top) will anyone likely get off trail. Also, the park has errected large cairns to help people get back to the trail. I have a few "wonky" points, but it should still be helpful.
GPX of Minaret Lake can be found here:
Lake Minaret GPX