Kai Lenny is the person you should think of when you hear the well-trodden term “waterman.” He rides everything, really. He paddles and tows and uses the wind. Whether it’s big waves, small waves, or no waves at all, Kai Lenny rides on it. Of course, the wind is something that can either make waves amazing or ruin them entirely, so it makes sense that people have figured out a way to harness it for fun. Kai Lenny, however, is constantly figuring out new tweaks to make things just a little MORE fun. Enter the Wind Weapon, a hand-held sail that may just be something we see a lot more of in the future.