There is no breed that is as prone to Hip dysplasia as the German Shepard. One of the next worst breed's is the Labrador Retriever and then the English Springer Spaniel (mostly in show breeding).
You could teach a goat to fetch, that won't make it a retriever. You could teach your brother-in-law to cook and clean, hope that wouldn't make him a good wife! Most any breed dog can be taught to do thing's that resemble hunting and if they make you happy, so be it. Please tho, if you get one and it work's for you, don't start advertising "hunting German Shepard's". We got enough wanna be do it all breed's that have never proven themselves in any recognized forum.