If there are bucks around you and they are in heavy rut short quick grunts are the trick. You'll know when they're there and you grunt at them and they grunt right back. In this instance you can answer with one short stern grunt for everyone of theirs. This stradegy brings them right in to your stand. I had 2 come right into me one evening here in Southern Ontario and they're not known for being to vocal here. This was a pocket area with lots of bucks to does.

I've been snorted by does only to have a buck come into the snort. I then coaxed them in a little further with a couple of 2 second bleats and a couple of 2 second grunts. When calling blind like Tazman says you don't want to call to often but just a 2 or 3 second bleat every 15 or 20 mins. will do. I like this in quiet walking conditions in high grass areas that have ample white or red cedar trees for cover. You can grunt them right out from behind one of these cedars.
good luck

GOD BLESS
Charlie Patrick
Eastern Ontario Guided Adventures http://www3.sympatico.ca/chazpat/wildcanada.html