Just a heads up:
Anyone that likes ribs will do themselves a big favor to lug out their elk ribs. The two sides make a pretty stout load, but if you're really herky you can sandwich a shoulder between them before lashing down to your back board. In my youth I sandwiched both shoulders between the two sides, and even downhill that load liked to killed me with on a 3-mile pack. These days I just carry the two sides and make a separate trip for the two shoulders.
On horseback we split Rocky Mountain elk lengthwise in halves, then make a cut between the last two ribs. That's about right for a balance point. Lift the side onto the horse inside down, and pass the saddlehorn through the slit between the ribs. Lash it down. The cut helps keep the load from shifting and lets us bring out the ribs and all else. It's too much of a load with Roosevelt elk, at least in terms of a couple of guys being able to lift a half onto a dancer.
Elk ribs, however you fix them, will put beef and pork to sad shame.