Temporary passenger side tow mirror

I am trying to figure out a temporary passenger side mirror for my 67 Dart. I would like to tow my teardrop camper a few times. I have a 70s style temporary fender mount tow mirror, but the arms hit the ridge of the fender. I have thought of rigging a backup camera but am not sure if how long it would last being on all the time. I only have the factory drivers side mirror and don't want to add a permanent passenger mirror. Ideas thoughts suggestions.

After reading your post I looked up temporary mirrors on Camping World's site and they have a door mount that looks like it has good reviews. Just a thought.