I don't have a trimmer specifically for barefoot horses, but what do you think shoes would do? Wouldn't they allow the hoof to grow without being worn down? I was thinking the horse boots would do the same. I could just put them on while riding because the horse area is all soft dirt and the pasture is obviously grass. When we go out riding we go on asphalt roads through the neighborhoods, rocky areas, or big open areas with hard dirt.
ETA: I think she has a mild case of it and also really doesn't like to go on her right lead possibly because of it.