Amazing .61 acre waterfront property perfect for your future dream home – INCLUDES 30â #C-76 BOATSLIP! When you purchase in Windmill Harbour you are buying a private and exclusive piece of paradise! The private yachting, social and tennis club offers the finest in dining, services and amenities. Home to the South Carolina Yacht Club and a 15 acre inland, lock controlled harbor with 260 boat slips. Great community with small neighborhood feel and convenient north end location with quick access on and off Hilton Head Island.