Look at this link that I found when looking for the site on ear trimming. You are supposed to keep the top third of the ear shaved but when trying to get stubborn ears to stand, I'd remove most of the hair to get that added weight off. After they're standing, the hair can always grow back. Once you lighten the load, they may pop right up and no tape will be needed.
http://books.google.com/books?id=yA6...#PRA2-PA118,M1