Failing any better suggestions from folks more knowledgeable and experienced than I (of which there are no doubt a large number), you could always make a frame, tack the remains of the hide to the back side, hang the frame on the wall or the back of the door to your workshop. Or if you have some space overhead, maybe make a large-ish octagonal cylinder, wrap the hide around the outside, and then hang it from the ceiling. (This may also help storage of other long things that you might want to keep hold of if you leave one end open.)