Instead of enjoying retirement, Greg, 87, spends his days shovelling rocks, trying to build a wall to protect what's left of his Stradbroke Island home. "Probably the rest of my life I'll be topping that wall up," Greg told the program. ContactGreg has been building a wall around his home using rocks to help protect it from washing away. (A Current Affair)Residents' plea to council over coastal erosionAnother resident, Linda, said there is the option to access large boulders through the council quarry on the island. "The North Stradbroke Island quarry is not operated as a commercial quarry.