RE: grunting?
One good thing about the grunt call is I have never seen it spook a deer, assuming you don't just completly go crazy with it. I agree with W.Dale, I think a sequence every 15 minutes or so is appropriate.
I posted a topic recently about the best grunt call, many suggested the TRUE TALKER call so I bought one. This is the neatest call I ever saw. You can mix up your calls (without adjustments)in a sequence to sound like more than one deer. I'm excited about giving it a try...Fletch
Good Luck All....Fletch