I just do the call myself. A hunting guru taught it to me about 5 years ago. I'd never used it until two years ago, when I heard a deer make the sound for the first time. He was a dominant buck and had just got done kicking the heck out of another buck that had wandered into his territory. It was a very quiet night when about 100 yards away, I heard two bucks square off in an all-out knockdown dragout fight. All I heard was the two sets of antlers crashing against each other with rage and fury. After about 20-30 seconds, I got down from my tree and started a rapid, yet silent as possible stalk through the brush. I got to about 40 yards away and was just about able to see what was going on when one buck gained the upper hand in the fight and chased off the other. The loser crashed through the brush no more than 30 yards from me, but I never got a good look. The winner stood about 30 yards away, doing the snort-wheeze a few times, before he headed off. I never saw him, but a few hours later, I shined him in the field. He was the same buck I'd been seeing all season.
To make the sound, you take two very short, quick inhales, then one long, loud, airy exhale. kind of like:
sip-sip (slight pause)WHOOOOOOOOOSHHHHH!
Keep in mind its a sound a buck uses to intimidate others and is a sound of aggression, so its likely to chase away less dominant bucks.