Goya Fifty RDM 50% CarbonGoya Fifty RDM 50% Carbon RDM Reduced Diameter Mast 50% Carbon. The recreational Goya mast. The best value Goya mast. This mast is a pretty amazing blend of affordability and great quality. Definitely recommended for the most recreational of conditions, up hauling, learning the basics of windsurfing, beginning water starting, planing, learning to get into the straps and harness, cruising. The Fifty has all the same bend and stiffness numbers as the