Bend at the waist. I did the same thing last year, more times than I want to say. I know to bend at the waist, and practicing from an elevated stand I do, but in the heat of the moment I just put the pin where I wanted to hit and let it fly. When that deer just kept on feeding as if nothing happened, I knew 2 things. 1-my bow is quiet enough and 2-I need to remember to BEND AT THE WAIST!