Playing golf out in Southern Cal on a course that wrapped around a canyon. Out of bounds meant out. of. bounds., as soon as you crossed the line 6-8 of them would fire up. and all I had was a bag of sticks.
I've heard it more than once too...seems funny to me that the smaller the Diamondback is the louder the rattle is. Then on the other hand the Canebreak gives you a subtle shake once to let you know he is somewhere...but nowhere enough to let you locate him from the tick tick he made.