I agree that hop flavors CAN come through with the 60 minute additions (if enough hops are used), but a hefeweizen should not have any hop flavor. 8-15 ibus from a 60 minute addition just does not contribute anything, in my experience.
...but then again, while I think my palette is pretty good, it's nowhere near as discerning as some people's (beer judges, etc) so YMMV.