Wow! $79. That's impressive! I don't expect to do nearly as well.
Since the unit has four sensors mounted along the rear bumper, I don't think it will have any blind spots.
My plan is to get out and walk around each campsite before backing in. If there are small objects on the ground (like stumps) or dangerously low objects overhead (like branches), I plan to place a traffic cone to mark them to ensure that I won't hit them. If it's a dog or other fast moving object, I'm assuming that they'll know enough to get out of the way if I go slowly.
The same company (VisionStat) offers a combination system with backup camera and integrated display. That"s the unit that I think will be the safest. Since it's a big fifth wheel (38') and I'm alone with no spotter, I want to be as safe as possible.
I was hoping someone on this network had used one.