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

Try the walkie talkies they work great. All the trees in state forest campgrounds make it tight backing up. With her on the radio I can watch the front end to make sure I don't swing into any trees and such. In wide open spaces its not such a big deal but when your backing up on a turn with a 30 foot trailer and trees lining the edge of a single lane road it works like a champ.