If you're a little scared of Facebook Ads, then I suggest you start with the people who are already familiar with you. Those are the people who are on your email list. It takes less than 5 minutes of time to complete for you to have an audience that is a great way to test what ads will resonate with your golfers.
Put this on your calendar to upload at least once a month. Your email list doesn't automatically upload into Facebook without you going through this procedure.