Gasholes cap
I use a "Kap Keeper" that's the same type of thing Hersh uses--started using them years ago after losing several favorite hats overboard--among them a signed Broncos Superbowl team hat with Elway and Sharpes signature--
Clip it to the band then your shirt collar if worn forward to the bill if you be runnin' hard
Haven't lost a cap yet with those little suckers