The most popular kayaks for fishing are rotationally molded from polyethylene due to their durability and lower cost. Generally, kayak fishermen look for stable and comfortable designs. The new generation of twinhull (catamaran) kayaks that was recently introduced into the market is stable enough to enable both paddling and fishing in the standing position. This technological development also solves some ergonomic problems that are associated with sitting for long hours without being able to change positions, and frees kayakers from the need to sacrifice speed to stability, which is another problem that characterizes monohull kayaks.