I guess my only recommendation is to sound like 2 bucks fighting and not 2 bucks having sezures! All the actual buck fights I've witnessed/heard start out with a loud pop. This is the 2 bucks initially coming together. An actual buck fight is more pushing each other around so the horns are more "grinding" rather than having them stick their horns together and shake their heads back and forth as fast as they can. The other thing I've noticed is that most fights don't last a real long time....usually there is one buck that is clearly the more dominant animal and the other buck is just "trying his luck", so I have better success with shorter rattling sequences. The longer you pound the horns together the more apt the buck is to pinpoint the location....make him "hunt" for you!

I've heard hunter's rattling before and it's easy to tell the difference when the hunter thinks that the "winner" of a fight is the buck that can move his head back and forth the fastest!!

I don't often rattle, but if the situation is right I will....
-If I'm in a set that would be difficult for the buck to scent check the area than I am more apt to "blind" rattle.
-If I see a buck that I want to shoot(I don't call to non-target animals at all. what's the point?) and he won't respond to a couple of grunts, I will often rattle once he is in a position or location where he cannot see the area, ie. moved off a ridge or worked into some cover that makes it difficult for him to hang out and survey the situation.

So...pop those horns together, grind 'em around, and "slide" 'em apart like the loser just turned tail ina hurry.

P.S. Not all bucks come running a.. over appetite to a fight. The smart ones often try to come downwind so be constantly be checking that side for a "late comer".