Actually, what we do is take both of us, and always stay very close to the little one. Outside, ours have tended to be fairly cautious moving about, so there's no danger of them scooting off. But basically, cynthb stands on one side of the hedgie and I stand on the other, about three or four feet away. They snuffle about, often coming to sit on our shoes for the familiarity of it, before heading out again. Obviously, it needs to be a dog-free park, but the worst that's ever happened was our albino Ruby ended up being the center of attention of a Grade One class out on a field trip.
Always be prepared to scoop your little adventurer, too, if there's even the slightest sign of trouble.
Always be prepared to scoop your little adventurer, too, if there's even the slightest sign of trouble.