I use this little cord about 6 inches long. It has real small alligator clips at each end. I clip one end to the back of the ball cap adjuster and the other end clips to the back of my collar or t shirt. If the hat blows off all I have to do is reach back and put it back on. It works great. This little trick came straight from my buddy Scotty Hampson in Australia. Thanks Scotty !!
Hersh