Commands are also inappropriate for guests. For example, you probably would not order a guest to clean your house. Similarly in ski instruction, commands are not as effective as directions framed in a positive manner. Maybe you should do the same. However, many instructors regularly critique and compare the skiing techniques of their students during lessons.
Application is a useful alternative to comparison.
After an observation run, ask your students if they noticed anything in their classmates' skiing that they would like to apply to their own. As you attempt to identify your guests' needs, avoid the tendency to stereotype them or generalize their needs. It's also wrong to make assumptions about your skiing guests. You will be more sensitive to individual needs if your ideas aren't governed by cumbersome preconceived notions that naturally evolve from generalizations. What follows is a list of practices that will help you accurately identify the needs of your guests.