I myself am not a big fan of the flydown cackle or the tree yelp I will often even restrain myself from even plain yelping too early if I think the gobbler is likely to stay on the limb and be a loudmouth about it
Worse case scenario is a gobbler that can see your position clearly from the limb , and stays up there gobbling until he sees miss hen , or eventually spots the hunter -I'm sure every hunter has experienced how a gobbler can zero right in on your one yelp location even from distances of 1/4 mile or more .So in my mind, a gobbler that is 200-300 yards away that hears that hunters flydown cackle will most likely spend a good spell staring right at you
one of the biggest mistakes hunting public property with other hunters is a getting a gobbler fired up too early {still dark or not } and neighboring hunters start to move in on your position - if they don't spook or kill the gobbler that morning those hunters are more likely to hunt the area you were in, in the future - fun hunting for the next day ...
Every hunter needs to weigh the hunting situation at hand , the preferable hunting situation is to get him worked up just prior to flydown time in the hopes he pitches down your way - Shannon