My mare, Leia, is a 7yo ASB/pony cross mare show has done 2'6" and 2'9" courses easily and even some 3' lines. My trainer, who is also a vet, said she had no problem whatsoever jumping 3' and that she could go higher, but I shouldn't make her. She said 2'9" should be my limit with her because pushing a horse like that is what ruins horses in the long run. She said eventually, I wouldnt be able to jump her.
BUT my friend has a welsh/qh who's the same height and about the same build, only a bit fatter :P she does 3' and 3'3" courses easily and has been doing them for a long time and is fine.
I'm just wondering if I should stick to 2'9" or should I try 3' courses? Keep in mind I don't want to do ANYTHING that could jeopardize her soundness.