I am pretty sure that my very narrow LOS is being partially blocked by a tree top or branch on the large tract of land adjacent to my property, because the signal is generally about 15 points lower than it should be, and it fluctuates noticeably in the wind, but does not move when calm I would cut down or trim the offending tree (very forested, no one would notice) if I could identify the culprit. But how? Dispointer is no help, too many trees to tell which one it is. I don't have an iphone, so can't use that app. Trying to eyeball it makes 3 or 4 trees likely suspects, but my moral values allow me to cut down one, but no more. Any creative ideas? TIA.