One point appears to have been overlooked.
Thinking back to glider retrieves in my early days, the croppie who checked me out for paddock operations demonstrated very clearly (using his "special" paddock) the need (providing you have the opportunity ie a discretionary landing) to fly a couple of wide circuits around the field .. amazing what you can pick up in the way of, for example, wires from one side but not the other .. depending on sun etc.