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ID never be elk hunting in this state if I was worried about heat. Never had an issue .. Off the animal and in game bags and hang in the shade
Not much you can do to protect meat from the critters. Move it far away from the guts and kill sight. I would worry more about the heat and flies. I have heard that if you put crisco vegetable shortening on the meat flies and bees will stay away. I havent tried it yet, but I'm going to do an experiment with it at home.
If you have it hanging, urinating close by will keep most predators away temporarily (in general). Flies are definitely going to be your biggest problem.
Since you are in the backcountry, you'll be quartering or boning the meat. In those size chunks, para cord/550 cord will be fine for hanging meat.