+1 on walkie talkies, not a camera. If your husband requires your assistance backing up, the best thing you can do is work out a simple communication system with him. I dont mind backing in myself, but there are times I have my wife help be an extra set of eyes if I think there is an obstruction i wont be able to see. With the walkie talkie she only has 4 things to say (stop, straight, driver or passenger) and those are for the direction that the rear of the trailer needs to go. She keeps talking continuously so I know if I hear nothing, I should stop because the battery died (happened one time and she thought I was ignoring her).

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