Maesfen
Extremely Old Nag!
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I might well myself have left your youngster alone, but I think it is a very dangerous thing to suggest on a forum that people with limb or foot deformities in young horses should ask do the same.
THIS!!
It's not a long step from some big studs producing colts for grading at three so they have to be ridden; people who normally don't have anything to do with youngsters see this and think it's fine for their youngsters too and then wonder why they've broken down at a young age. FGS people, get good qualified advice and don't tinker with your precious youngster's future, don't go on one person's experience.