We only have one cell phone that we use just for emergencies, so we'd still be yelling at each other. We actually do have a couple of those 2-way walkie talkie things, but keep forgetting to get them out. I'd get along fine with my wife directing me if she would stay in my line of mirror sight. I don't know how many times I've had to get out of the truck and tell her to move from standing directly behind the trailer giving me hand directions .
Besides other uses, I have used my backup camera at our trailer storage site so I know how far back I can go to the fence line.
from Alberta Canada
2011 Flagstaff 8526RLWS 5th Wheel
2011 Ford F250 4X4 Crewcab Superduty 6.7L Diesel
B&W 3300 Hitch for Ford 5th Wheel Prep package