If you’re into progressive training techniques you might find Exentrix an interesting mode to improve your skills. The world’s fastest skier Jan Farrell swears by Exentrix training to prepare him for the micro-adjustments needed to stay on your feet while traveling at 143mph:
“Exentrix is an intelligent, active, multifunctional training device which establishes a completely new philosophy in training and rehabilitation! Resistance is provided by a powerful microprocessor-controlled electrical motor; this opens an horizon of new functionalities impossible to obtain with conventional training devices.
Its several operating modes make it many training devices in one: free weights, flywheel devices, rubber bands, an isokinetic machine and more. It is also fully customizable for specific training or rehabilitation needs.
Resistance and speed can be adjusted separately for the concentric and eccentric phases, while its real-time feedback monitors the training parameters during exercise. Its many unique features including superimposed vibrations and random perturbations make it a unique tool in a gym or rehabilitation center.”
Here’s another one of Jan’s favorite exercises…attempt at your own risk: