I'm no expert- but I can give you a little bit of context for your search. OTTBS come in ALL shapes and sizes, some look like quarter horses, other like arabs. I would be very careful about leg conformation in thoroughbreds, who tend to have long and weak pasterns while others have really bad feet. Do not make any sacrifices with leg conformation because jumping is very heavy on their legs, and you could struggle with soundness. Hind end conformation is also quite important because they will need to be able to tuck under themselves easily- so something that has a nice curve in their hindquarters. It all depends on the horse, and some have function over form- they look conformationally bad but they get the job done. In jumpers long backs are said to jump nicer, but I've seen some very powerful short-backed horses. When looking at OTTBs, don't settle for less- there are so many out there and there will be the perfect one!
