Cmays, 437 yards, are you sure? The only time I've come close was when I played on an RAF base and the ball went straight down the runway. How dry was the ground? Anyway, Indi Jones, it's not always just a swing that reduces your distance. You mentioned that you normally hit 280yds. This is a very respectable distance and just because you were hitting 30yds less, remember the locals mentioned it may happen. This can easily be down to different atmospherics and temperature. I play the same course regularly and depending on conditions heat / fog / cloud, 'mugginess', i.e. humidity, the ball flight can be greatly reduced. Different locations will also demonstrate this. Does this make any sense ?

Cheers.
Lee.