So my buddy and I were hunting about 100yds apart trying to cover a travel corridor that we had been waiting for the right wind. The farm is about 3 hours away, so we only hunt it in spurts of several days in a row. On the last afternoon, as i pull my bow up at a little after 3, i hear that all too familiar "SHWACK" come from my buddies direction. As i look up, i see the big 10 that we've been specifically hunting for come running by with an arrow sticking out of him. Honestly, the angle looked good, but the penetration looked terrible, but the deer did crash through some brush, and the arrow could have pulled out for all i knew. Hey trotted off stopping periodically, and didnt look overly injured to me, but as i observed him over a distance through the grass towards a particularly thick clearcut over a distance of abot 200 yds, the angle looked good, and he was doing the tail flick as ive observed is a sign of a fatal hit in the past. After deliberation, we decided, it was best to wait two hours before we went to look. The logic to us was easy. We couldnt come back in the morning, and we were worried that finding blood in the dark in the clear cut could be nearly impossible from past experience. Needless to say, we tracked the deer over 700 yards according to the gps, until about 930 before the blood just vanished(Side note : my buddy said the deer was slightly quartering away, about 25yds. This lead me to believe me the shot may have gone over the vitas on a downward angle through the no zone between the spine and the body cavity and missed the vitals, lodging in the opposite shoulder, accounting for the lack of penetration. So either the deer was dead from the shot being perfect, or not. This was my thought process ) What would you have done differently in my position?