What should really be the role of college coaches in the college recruiting process?

Many people believe that it's up to the high school coach to get his or her players recruited for college. Many families have invested and trusted many high school coaches with their sons and daughters high school athletic future, only to be burned and let down in the end. I've seen it happen too many times. High school coaches do very little or next to nothing to help their players get recruited. If they were successful getting their players recruited for college, there would be no need