Has any one here ever played practical jokes on your hunting partner. My favorite is planting his hole. Everyone has experienced the ghost target, where you dig and dig and nothing shows up. Finally you give up with a puzzled look on your face after the signal turns to trash or goes away. I always keep a few pieces of well worn silver or an uncleaned but good finds around to use for this joke. I take them with me when we go hunting so I can pretend to have found them in my buddies abandoned hole. After about two or three times of this happening to him....he starts cussing his machine, his pinpointer and every other thing he can find for an excuse. It's almost impossible to keep a straight face until you reveal your joke. WARNING: always expose yourself before he starts trying to chop a tree down with his detector or snapping his pinpointer in half. Also, beware of payback like the huge grub worms that show up in you earphones after lunch break.