 The Marine Board's Brian Paulson says a standard ankle leash can get tangled with underwater debris and pull the person under, leading to deadly consequences, even if they're wearing a life jacket. In 2020, we had two stand-up paddleboarders doing everything right, wearing life jackets, except they had the wrong type of leash. It was not the quick, detached leash, and they got hung up and drowned. And that has happened other times since then.