I used to use the grid feature on my screen, but I found myself nearly hitting power lines that blended in with the grid.
I don't think there will ever be an avoidance system good enough to see everything all the time.
Interesting, thanks for sharing. I must say that I had never seen a unit mounted on the roof before. Here in the south, they are all placed on a concrete slab on the ground.
Well, wouldn't you know - with the beginning of cooler/rainy weather, our heater decided it wasn't going to work. Called the repair technician out. They found that some of the parts were going to be quite expensive to replace. Given it was a...