I honestly believe that many people don't understand how to trail a deer. Give it some time, go to where you shot him. Have everyone else stay back, and 1 person find first blood, unless you are very comfortable with the others. Mark first blood with toilet paper. Based on the ammount and type of blood and way the deer acted, determine whether to trail him then or wait. Have one person on point, finding blood and marking with toilet paper. Everyone else should stay way way back. Unless you are very comfortable with another person's abilities. If you lose blood. double mark the last spot, and immediately get your eyes close to the ground and work through the obvious directions he could have gone. Work those out for about 20yds a piece, damn near on your hands and knees. If you find blood resume previous. If you don't, start grid searching the immediate 50 yd radius, by yourself. If you still don't have blood, that is when you start gridding it out with a bunch of people in the direction of travel first, then over the whole area second.