I know a friend (Actually, several friends) who made a career out o turning horses. They buy a cheap horse, train it into something amazing, and sell it for double. My friend Terran took a young, unruly, hated stud colt and turned him into an AMAZING dressage horse. I mean Piaffe, Canter Pirouette, Half Pass......The whole nine yards. He sold for 200k to a dressage trainer in Kentucky. Granted it took her a number of years (Like all dressage training does) but she only bought him for 2k and gas money. I think that's quite a payout.
And the horses she normally turns take just about 30 days. She does mostly jumpers, but I've seen her turn reiners and WP horess too, even some barrel horses.
But, if you want a more stable career I would maybe go for the Vet Tech. Although I'd imagine Bloodstok Agents wouldn't make a bad profit, either. Go around and appraise horses, and tell em' the yes or no on their racing career. That'd be a blast for me.
I personally intend to take part time classes at Meridith Manor when I travel to West Virginia for college. I found a smaller college near there that I wanted to take writing courses in, and since Meridith Manor is right there......Hmmm :)
Pssh.I didn't pick up the wrong lead
It's called a counter canter...
...A very advanced maneuver.