I actually board my mare and gelding but I am at a very private barn and can do whatever I want whenever I want. I am continuously moving my horses from different round pens, stalls, arenas, pastures whatever so that they can get used to being alone or with other horses. My gelding could care less if there is another horse around. My mare is just 2 1/2 and I have only had her sense February 3rd so she is still has a little bit of anxiety but not bad. She will still nicker back and forth and run the fence line a bit when the other horses get to playing in the pasture and she can't play. Sense I have had her she has not been turned out with any other horses. She gets to smell my gelding threw a fence but that it is. I think the time outs are good for them. Teaches them patience and what they are doing is wrong. Being tied is boring and there is nothing to do but stand.