do you use the aiming light? you want it to be just below your waste, and moutlries tend to work better over bait or soemthing where the deer have to stop as opossed to a trail where the deer will be walking by.
heres one walking by
and heres a video
http://s66.photobucket.com/albums/h245/cougars_2009/?action=view&current=Picture256.flv