grunting in whitetails

[outdooraddict]

ive rattled a little with success one time, id like to add grunting to my setup or just grunt by itself. i talked to a guy and he said learn the tending grunt and give each stand a series or two and wait 30 minutes. any good grunting stories tips or ideas for these whitetails that are going to be rut crazed in the next two weeks.  what all is included in a "Series", and pick "rattling spots" thick cover, or a trail, treestand, etc