Here is a link to the <a href="http://www.informationpages.com/search/ypserver.dll?bk=401&pg=710&s=0&gp=&f=&t=0B6000000000000&go=Campgrounds#0">HHI Yellow Pages.</a>
It looks like there are 2 campgrounds right on HH and another in nearby Bluffton.
Enjoy!