If a vehicle gets into a situation where one or more wheels are "hanging air" (off the ground and have no traction), the spotter may try to re-balance the vehicle. The most dangerous way is to hang on the side of the vehicle using the spotter's weight to bring it back down. Here the spotter is acting as a 'Rock surfer'. A much safer method is to use straps or ropes to bring the wheel or wheels down to earth again.