Pohaku Beachboy Paddles offers designs that are 100% carbon with specially designed palm grip, oval shafts, and functional blades. Pohaku Beachboy Paddles are light, strong, proven, tested and used by Hawaii's pioneers of this new sport. C4 Waterman(tm). C4, or Core 4 represents the 4 core disciplines of a waterman: STRENGTH, ENDURANCE, BALANCE, and TRADITION.