Originally Posted by IrishHunter
Her hind end is my biggest issue with her really. As she has been doing hill work and it really hasn't helped all that much. It could be because of the lack of weight on her too.. But it is also conformational. How correctable would that be if bred to a stallion with a nicer rump?
The only way you will know the answer to this is to look at stallions who are much more correct and see if their offspring have inherited the same hind quarter conformation as their Father.
If you can find other horses with the same dam as your horse and other horses with the same sire as your horse you can also see how prepotent that weak rear leg is in those. IOW's the horse you have may be as prepotent in a weak hind quarter as a stallion of your choosing is prepotent with a strong hindquarter.
An additional question is WHY is your horse a hard keeper. If it is an underlying metabolism, you may not want to pass that on. If it is an underlying mental issue (such as is found with stall walkers, weavers and cribbers) you also may not want to breed that.