With a completely redesigned base featuring Aerospace influenced channels and core fins, the 2013 Lyman wakeboard from Slingshot is the latest in flex technology. Engineered to ride with or without bolt-on fins, the Lyman board combines the most powerful core available with dynamically designed base features to generate a fluid ride, stable traction on edge, and explosive pop while wakeboarding. With single concave between the asymmetrical core channels and a subtle spine with dual concave through the center hull, it offers clean and early release off the wake and ultra soft landings. Unified 3-stage rocker. Lyman 136: 53.5"L x 17"W. For 95-165 lb. riders. Lyman 140: 55.1"L x 17.5"W. For 125-215 lb. riders. Lyman 144: 56.7"L x 18"W. For 150-260 lb. riders.