Other than my daily reverse park into my car port to squeeze my CeeBee behind my car, I find impromptu reverse parking extremely tricky when I do find a park. Issues for me: I don't quite flat foot on my bike, on balls of feet, hence lack traction and leverage. Mostly ok except if uphill. When reversing at an angle, I can't really use the mirrors, they don't show me things I need to see! Full face helmet, hard to use peripheral vision to gauge distance of other bikes beside me. I am constantly amazed how closely bikes are parked in the city. What are your methods and what works for you?