I know it is very dangerous and never a good idea to leave a halter (especially a nylon halter) on a horse when they are turned out. What is your opinion on this: A 13 year old horse, super super friendly. Will walk straight up to the fence and nicker when you look at her or walk over that way. In a one-acre, electric fenced (fence is off) pasture. Large tree in the middle with no branches within reach of the horse whatsoever. Pasture is about 10 yards from the house with a large run-in.
Would you deem it safe to leave a halter on her? I don't personally think it's necessary. She'll come right up to you when you walk over. It'd be very easy just to put it on her then..