Besides what CobyRupert wrote about the trailer tracking to the inside on corners, there are two things you need to know. First, when going forward, of course, you do not need to worry a lot about the trailer, it will follow your car. When backing up, the opposite is true; you do not need to worry much about where your car is going, just make the trailer go where you want and the car will follow it! Second is when parking the trailer, whether going forward or back, the important part is to get the trailer WHEELS in the parking space. If you start turning when the back end is in the right place, but the wheels not yet far enough, then you will be driving the wheels into a place that is not aligned with the parking space. Of course you also need to watch both ends of the trailer (or have someone else doing this for you) to make sure it does not hit something on either side of the space, but it is the wheels that need to be properly placed, and then the whole trailer will be properly placed. On short-long vehicles - the only time I had a lot of trouble backing up a trailer was when it was carrying my daughter's car, towed behind a fairly large U-haul van that was much longer than the trailer; that was difficult!