How much does a sailing instructor make?
That depends on where you work, and what type of instructor you
are. Assistant Instructors earn less that Dinghy Instructors,
Senior Instructors earn more. You probably mean a Dinghy Instructor
(DI).
I am paid £6.37 an hour, for being a DI on a reservoir, so not
coastal, but rates vary from club to club. My advice would be to
check your local club.