[:-] Won't a "lugi" gum up your diaphrams ?
No lugi's for me [:@]...just a deep gargle.
I imagine it would. .....But then again, you wouldn't actually be hocking flem from the back of your throat each time you tried to call. The "lugi" reference was just so that someone could initially figure out the magic to making the sound.
Sometimes the same old worn out instructions just yield nothing and you have to try a fresh approach. In baseball I heard the phrase "Keep your eye on the ball" too many times to mention, but I never quite understood until someone phrased it different and said, "Son, I want you to see the ball rebound off the bat." With that, I suddenly "got it" and figured out the fundamental element to hand-eye coordination.
If trkyklr is asking here, I'd bet the standard instruction hasn't done much for him.