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

We have always used Walkie Talkies, but we did switch to waterproof models after a monsoonal rainstorm on the Oregon Coast shorted my wife's WT out. That resulted in me breaking a big tree limb off a tree in the campsite. I was backing in and could not see out of either mirror. Fortunately no damage to our MH. We have not encountered conditions like that since. But we are prepared.