I honestly haven't felt like it was much of a problem. IMO, the main thing to understand is that Rust strongly prefers that each instance has one and only one owner at any time, and any references to that object should only exist for a strictly constrained amount of time. This is the preferred style, and doing anything else, including some patterns common in other languages and OOP, will be very painful. Don't be afraid to throw clone() around with reckless abandon any time references get confusing, most things are cheap and fast to clone, and it's generally better to get your program working now and then optimize as needed, rather than try to figure out how to handle a weird case.
