So a while ago my dad went to a maker's fair and saw a panel about DIY Drones. He then got the idea that he could use one to survey the small orchard that we have(it's about 19 acres). It was his understanding that with this software it would be completely antonymous and he would only need to watch it fly. So i have a few questions:    1. Given that the trees are 18 feet apart would a plane…