How difficult is it to learn how to water ski?

For most people, learning how to water ski on two skis is pretty easy, but learning how to single ski is quite difficult. A recommended way to work toward learning how to single ski is to start on two skis, and then learn how to drop a ski. Once you are comfortable dropping a ski, you can then try starting from a single ski, which may take many weeks to learn, as well as require a fair amount of strength and athleticism.