Yet another interesting approach for your android smartphone could be getting the outlines of a lot, or some of them using Google’s My Tracks. I couldn’t find a more proper tool, so I had to manage with it I’m I’m open to listen about a more focused app.
The use is easy. Once I downloaded My Tracks, I surrounded the lot, stored the track, uploaded to google maps and here we go! the track can be seen as the farm where and how it has to be. And even better, I could add a shape (closed!) precisely outlining my lot. This shape can be exported to a kml file. So, I can do anything, already.