I am wondering if the spot where I have dug a hole to mount a pole for a dish will be ok. In this picture I am standing directly over the spot where I dug the hole. The hole is on the west side of my house and the dish can point w - sw, on the compass on my iphone between 227 & 237 there is no obstruction from the trees at all. Yes the iphone compass is pretty true, as I was standing there I turned to true N and I could get turned to calibrate to 0 / North.