Use hazzards when reversing, like truck do. I did that for around 6 months till i got around putting parts together and getting it done.
at least people around you know that you are up to something, it doesn't take them long to figure out your intentions.
my mech had done another car a couple of weeks earlier, and taken longer. this time he knew what to expect, and actually made a special tool for the job while doing mine. this ought to make it a lot easier for him next time.