I have, and in past seasons I have used the Skier's Edge, but not this year. This year, I have been taking a ski conditioning class from the "other Lisa", LisaHardt, who also is a fitness instructor. She used a variety of techniques and equipment, including a Reebock slide board, Cybex machines, Roman chair, medicine ball, those big balloon balls [called?], and other equipment - sometimes in ways I hadn't previously considered. In addition there were "floor" exercises thatdid not use equipment. I have taken that class once a week and have done much of the routine on my own once a week. I also have played tennis at least twice a week. Also, I have lifted weights once or twice each week. My conclusions:
The ski conditioning class improved my tennis fitness.
The ski conditioning class and the tennis improved my ski fitness.
For the first time ever, I went out for the first day on the hill, and I never felt any weakness, pain, discomfort or tiredness during or after. In my opinion, ski specific conditioning classes with a trained instructor work - and work very well. During the season, I intend to continue at least some of the fitness routine and continue with the tennis and weight lifting. I plan to go through a ski conditioning class with a trained instructor before and during very season in the future.