After every horse is back up to health and has gone though training with them I place them in a home. Not just any home though. They sign something saying if horse is to be sold I MUST know, and have first buy back option, and if I cannot buy at that time I MUST know where he/she goes. And I keep tabs....Im a nosy person
I email at least once a week to new owners of one of my horses... for a while.. Then they get the hint and continue updating me. I also make them sign that they Will NEVER end up at an auction and go for slaughter!