All courses recycle lake balls and dye the water. The only visible balls are around the edge. The length of your club is enough to salvage a ball just inside the water. The E-Z Pik is designed to retrieve these balls. Patented design clips easily on to the face of any iron head and instantly converts that club into a ball retriever. Compact enough to fit into your pocket. SAVE ONE EXPENSIVE BALL AND IT"S PAID FOR ITSELF.