One more fit for the drone is timeliness during a "wet" season. Here in NE IL if you get a 2" rain, you're out of the field for 4+ days. A 3" rain is even longer. If you plan on spraying beans let's say on a 2nd herbicide pass because you know TWH is lurking, by the time the field dries enough so you are comfortable you won't get stuck or tear up the field, the TWH have really gotten big! If you get that 3" rain and the sun is shining the next morning, get the drone going if your product has an aerial label. Seeing standing water in a field is a problem when beans are full canopy, or nearly so. It's a problem when you're spraying fungicide on corn also. If you are lucky, you can see 10' in front of you. Even if you can get the sprayer through the wet hole, you'll tear up a bunch of corn trying to stay on the row. If you get stuck, figure out how you're going to pull it out of 10' tall corn when you're a 1/4 mile from either end. Drones don't care.