I'm about to take my son to school and then go take up the search again. To answer a few questions, the arrow obviously hit a rib and deflected back some. It did fall out the other side, but only after probably closer to 15 yds. There was blood all the way past the nock.
I was on the edge of a ravine that is thick as can be. The path he was headed in would take him to a fence with much more open woods on the other side. I don't feel he would go that way, especially since there is a main trail leading down the edge of the fence into the ravine.
If he jumped the fence, there were actually 2 ways he could have gone, into the corn or into those open woods, which happen to belong to a hunting club or something.
I will search all the underbrush near where I shot him and all the trails leading out and back the way he came. I know that deer will often circle back given the chance.