Before this season (and a few seasons off) I always hunted on a big ranch with alot of friends, family, and employees. I almost always sat in my stand alone but everyone knew where it was and we had good cell phone coverage out there. If I had a downed animal, I could call but I'd generally go in to get some food and come back out for search....camp was about 10 min away.
Now, the front gate of my ranch is 9 miles from my house. My wife always knows when I'm headed out and this season, I usually take my 8 year old daughter with me, though this time of year with school activities and parties, she's missed a few hunts. Again, its close to town so decent phone coverage.
Whether its hunting, scouting or just plain exploring, I think the only thing to be really concerned about is turning an ankle and having trouble getting back to the truck or something. Gun safety, of course but that's pretty universal. I also have a buddy bow hunting on the other side of the ranch I can call in a pinch.