First off there is little or no friction with the surface. Hovercraft will instantly go downwind or downhill unless the driver is alert. Steering can also be quite a trick and turns must be anticipated as the hovercraft tend to slide due to momentum. Without a firm grip on the surface, they can spin and do a 360 degree turn while traveling in a straight line. Hovercraft are not difficult to control, just different from any other powered vehicle.
Most people can get the hang of it after a few minutes of practice in an open area.
The light footed hovercraft is also very easy on the environment. The hovercraft can be driven over an egg without breaking the shell for the load is spread over a large area. And, since the hovercraft rides on top of the water, as opposed to in the water, it creates almost no wake. Hovers stop by settling to the ground or water on skids under the craft. Now that's not very effective on ice but a hovercraft can also spin 180 degrees and use the craft's thrust for braking.