In a recent case, we spent a day on a roof.
Our client had been the subject of noise complaints from her neighbour, who claimed our client's dogs were barking at all hours of the day and night. The neighbour also had video footage evidencing this fact.
Thanks to an afternoon and evening sitting on our client's roof, we were able to record clear video of her neighbour banging the fence with a stick and making 'meowing' cat noises, among other things, deliberately stirring up the dogs, then filming their reaction with her own video camera.
When presented with our report and the video we had recorded, the neighbour withdrew her complaint.