Not sure if any other Hunter Safety Instructors are here but I am. I figure as this thread relates to hunting alone I would pass on one of the strongest pieces of advice.
If you are going to hunt alone you should make a hunting plan if at all possible. Plan the hunt and then hunt the plan is the goal. The 2nd part is having a responsible party as your contact and letting them know the plan.
If you plan on going to "X" spot and hunting north of where you will park and will be out of the woods by 8pm at the latest if you bag something late, then tell them that and what time you'll be calling to let them know nothing has happened to you. If you change your mind about "X" spot because the wind changed and you are going to "Y" spot, then tell the responsible party that.
In the event you don't make that call, the time saved trying to figure out where you are. Time that can mean life or death if you are injured or hanging from a tree.