Was working in my yard the other day dogs on porch,backing up to dump stone in drive.this is about 70 yards from my sleeping bulldog. thought all was well till my wife was waving at me franticly, apparently I had backed over the bulldog! 3 vets and $3700. later he is o.k. any ideas on mirror system? i've seen ones on e-bay don't like looks of them. any suggestions?</p>