Materials and design
Most of the new SUP boards use glass-reinforced plastic construction, it’s made of polyester or epoxy resin, that is compatible with the polyurethane or expanded polystyrene foam used in the core. Some SUP boards use a hollow wood construction instead of foam with epoxy resin.
There are also, more convenient, inflatable boards. The core material is called ‘drop stitch’. Thousands of locked nylon stitches keep the board at a specific thickness. Pressure from specially designed hand pumps can inflate a board to over 30Psi. This creates a board not much less rigid than a hard board. This makes inflatable paddle boards durable and easy to transport. You can carry the board and the pump in a backpack.
The boards are generally longer than 9 feet (2,7 m), and for more persons or families, they could be longer than 12 feet (3,6 m), with features such as padded decks and concave hulls; they generally have one or three surfboard-style fins in the stern for tracking. Boards can also be a short as 7 feet, typically made out of high-performance Carbon Fiber. Boards such as these are used in Stand Up Paddle Surf competitions (smaller boards are more maneuverable). Race boards, which range from 12ft6in to 14 ft, are usually made of fiberglass or carbon fiber.