Sand Sculpture Contest - Saturday, July 31, 2010. Bring friends and family to help make sand creations on the beach. Prizes for everyone with grand prizes in three categories. Sand Sculpture Rules [PDF]. You must be present to win. Sponsored by Friends of Whitefish Dunes. Sculptures cannot begin before 8 a.m. Registration 11 a.m. - 2 p.m., judging 2 p.m., awards 3 p.m.