Good Video. The screwdriver trick is recommended by many taxidermists, but I always use a knife in the field, a little hair left behind is nothing. You can see, by caping completely, you save a ton of space, and more importantly, a ton of weight. I still don't think you'd be much over 30 something pounds doing it this way.
The toughest part of caping an elk is around the body, legs etc. Once you have the head, and cape just laying there, you're in the hope stretch.