Like me, they work at the Swiss Ski School; both are full-time students - of medicine and education, respectively - but teach skiing during their holidays.
Most part-timers teach skiing on weekends, and the instructor's pay may not even cover expenses for lodging, travel and meals.
This year, for the first time, two workshops are being held for people who have never taught skiing before.
Mr. Perelman, 77, is a former chemical plant supervisor who teaches skiing in the winter.
It's easier to leave this task to professionals at ski areas, who teach skiing with games, demonstrations and in play situations that give youngsters confidence on skis.
Trainees were taught skiing, mountain climbing, snow survival skills (such as building snow caves), and winter combat.
Having never taught skiing before, Wally loses his balance and skis down a steep mountain, dangling over a ledge while clinging to a pine tree.
The one who taught skiing?
While in the Special Forces, he taught skiing, survival, mountaineering, and guerrilla tactics.
He has also taught skiing at Deer Valley.