I always have a couple diaphragm cow calls at hand. Ive never called anything in with with a cow call during rifle (don’t try to either) but I can stop moving elk and keep them still for a handful of seconds nearly 100% of the time with a couple loud mews and I can do it hands free while shouldering a rifle. I will feel like I really screwed up if I forget my cow calls in camp even late into November. If I was you and I shot an elk miles from a trailhead (say the weather is sunny and mid 40s during the day and 20s at night) I would quarter the elk and hang the quarters hide on (I always bring a couple rolls of parachord), on a north facing tree in a shady spot (it’s usually a spruce). Hanging is primarily to cool your meat down as fast as possible but is also important if you hunt among grizzlies. Your first load would be all the loose meat like back straps, tenderloins and rib meat. I would skin and debone as little meat as possible right off the bat as I think meat ages best on the bone when temperatures are appropriate (below freezing at night and during the day no hotter than 50deg-always in the shade, no matter the temperature). The hide will protect your meat from dirt and seems to help keep the meat cool after it has cooled down over night. When temps are questionably high it is very important to hang it in the shade and keep dry. If you can’t get whole quarters out then I would still wait to debone upon returning for another load and only debone what I can physically get out each trip. If their is snow on the ground and bears don’t seem to be out I will often skip the hanging in a tree step and place quarters on a snowbank in the shade, hide up (to protect against small scavengers like ravens) but I always have horses so I can usually get it out that afternoon or the next morning. Speaking of that, it’s a good idea if possible to get your meat away from the carcass (for scavengers) and near an obvious tree or ‘spot’ and flag it with a bit of orange surveyors tape so that if you need someone else to retrieve your elk it is easy to locate. If you think that you might get lucky and be able to run across someone on the trail with horses willing to pack your elk out for a bit of dough you should leave the quarters near a tree so that stock can be tied while being loaded. Also if there is snow on the ground and the trip out is mostly down hill a utility sled works pretty nice for getting bone in quarters out whole too.