Sorry for your lost deer. You did all you could or all anyone could expect. I have had a fear of that same thing happing to me. I have made a gage from aluminum plate and marked it with an electric engraving pin. It has the height of the sight off the rest, the height of the rest off the bow, and the distance from the center of the rest (and sight) over to the bow frame. After I get up in stand I check the bow.