My earlier comment was in fact "Horses make jockeys and trainers look good" and I'll stick to that. Vo Rogue, Cyril Small and Vic Rail are one example.

Regards to the comment "why would you put Payne on a horse instead of Childs" (or similar) The reason is, that Payne is a heavyweight jockey whereas Childs is able to ride at a much lighter weight. If a horse has a big weight, it often makes more sense to have the horse carry as much "live" weight as possible as opposed to "dead weight" in the form of lead.