Most of my day is spent working with OH so I'm not alone that often but have never had a problem plodding off on my own. I too, take my mobile and usually tell OH/neighbours ect that if I'm not back by sundown to ring me and see what going on. (If I don't answer sound alarms lol) Micah goes out on his own quite often. He needs the alone time with the young horses especially getting them in tune with him. My girls, however, do not go anywhere bar shows alone. At shows there are many others around and I'm not so afraid of them playing up. In the back yard, even under supervision they have a tendancy to get excitibly competitive, cantering and galloping around. I could se them hiking up the jumps to 5ft just to see if they could do it. I have been pondering this question for a while as I'm contsantly asked if they can go out by themselves but being only 7 I have told them to ask me again when they are 10.