Hilton Head Islandâs St. Patrickâs Day parade will be on the water Hilton Head Islandâs St. Patrickâs Day parade will be on the water By Kristen Rary | March 4, 2021 at 5:44 PM EST - Updated March 5 at 10:30 AM HILTON HEAD ISLAND, S.C. (WTOC) - Hilton Head Island will have a St. Patrickâs Day parade this year, but it will be on the water. Instead of floats driving along Pope Avenue, boats will be floating along the Broad River. In a Facebook group created Wednesday afternoon, the Hilton Head St. Patrickâs Day Committee announced they were inviting people who owned boats and people who like to look at boats to gather at Brahms Point on March 14 and boat all the way to Shelter Cove.