WELL FOR ME I HAVE SEEN IT TO MANY TIMES.... IN INDIANA ON STATE LAND ABOUT 1 MONTH BEFORE SEASON OPENS LOOK OUT. THERE WILL BE PEOPLE OUT IN THE WOODS CALLING CALLING AND CALLING. A TURKEY IS A VERY SMART BIRD. THIS CALLING MAKES THE BIRD WELL LETS JUST SAY MORE WISE. I DO NOT CALL BEFORE SEASON. JUST LAST YEAR ON STATE LAND I SHOWED UP LATE AND THERE WAS A GUY SITTING BUY HIS TRUCK, WE TALKED FOR A FEW AND HE SAID, I HAD A TOM FIRED UP. HE FIRST LET LOOSE TO MY LEFT THEN I HEARD HIM AGAIN BEHIND ME AND THEN I HEARD HIM TO MY RIGHT BUT I WAS NEVER ABLE TO SEE HIM. THAT SOUNDS JUST LIKE A GPS TO ME. IT TAKES 3 SATS TO MAKE YOUR POSITION OUT THEN YOU ARE PIN POINTED. IF A TOM HEARS A HEN AND SHOWS UP AND THERE IS NO HEN, AND THEN THE TOM SPOTS YOU , YOU HAVE JUST MADE THIS TOM WISER... BUT IF YOU ARE DOING IT FROM THE ROAD JUST FOR LOCATING ON PRIVATE LAND I SEE NO HARM IN DOING SO. BUT DOING IT IN THE WOODS AND MAKING THE TOMS EVEN SMARTER. WELL LETS JUST SAY I LIKE A GOOD CHALLENGING HUNT ANYWAY SORRY TO BE SO LONG WINDED BUT THAT IS JUST MY HUMBLE OPINION.......TAKE CARE AND SAFE HUNTING TO ALL.