DW and I are getting better every trip. We use walkie talkies.. mine in the console monitoring, she communicates to me. We work pretty well together. She is in charge unless I communicate something different. When she says stop, that's it.. I stop.
I generally back in with the area I want to park on the drivers side. We did stay at one campground where the spot I wanted I had to back in on the off side (passenger side). Either that or turn around and go the wrong way down a one way entrance. It actually wasn't much different and later on the neighbors across the way said they were quite impressed on how I maneuvered it right in there. Their comment was 'we figured you were a professional truck driver, the way you just put it right where it needed to be'. Nope, Im not a professional truck driver, just take my time.
My main street at home is fairly busy. Not like a main street in my sub-division, but a next level/next main street. I let any oncoming traffic get through before I start to back up. Once Im backing up, if someone shows up, I just ignore them (as others state) and do what I need to do. I have yet to have anyone get upset. One or two turnaround and take another route, but no one gets upset at all.
Just take your time, you'll make it work.
Mike