Yes, we would recommend that they extend these past two years. It's very seldom that you'll get a ski instructor who will return for his second year once they get a level 2 or a level 3 certification. They will sell their wares, for example, to the United States or Japan or to Austria.
We're suggesting that two years would be great if there were more visas readily available, but if you double that to four to six years, you would find that there would be a lot fewer problems.