Do you equip your "backup spotter" with a walkie-talkie?

Yes, when I stop, and not move, it is my way of saying I can't see you and I am waiting for a visual to keep moving. But normally after a bit, I will exit the truck and go to my wife and let her know that I cannot see her. And while standing next to her, I will take a look towards the truck and will say, " if you can't see me at least see me through the mirrors, I can't see you either."

I think walky- talkeys will only confuse the situation even more.