When starting to reverse along a curve, e.g., to the left, turn the steering wheel to the left as well (this is where those accustomed to trailers and tandems have the most trouble). The trailer will bend to the left; bend it until you achieve approximately the angle you want to reverse at. The most important and easiest step: turn the steering wheel to the right, observing the rear left corner of the cargo box to align it perfectly with the front left corner of the trailer, creating a kind of sight. At this point, turn the steering wheel back to the left and guide the corner to the corner, reversing perfectly along the curve. If you need to correct the path, observe the vehicle's corner and move it 10-15 cm outside the trailer to bend it more, or inside the front wall to straighten it.