While very similar to the Navigator, the Trek incorporates a second ball joint, providing maximum adjustability. This system of two ball joints allows nearly any position to be achieved. This is especially important if access to the computer is required from both the passenger seat and driver’s seat positions.
Click here for a copy of the assembly instructions for this desk model. They include several diagrams of the no-drill mounting bracket (steps 5 - 7) that provide a better idea of how the desk attaches to the floor of your vehicle.