As a horse & mule owner that has a ranch surrounded on 3 sides by 1.8 million acres of National Forest, I get plenty of riding in, as I'm retired. I have a horse rental story a friend told me about that could provide many sleepless nights for a horse owner. Hey, I understand your desire, and strategy in wanting to rent horses, but I can tell you there's no way I'd ever let a "stranger" go hunting with my animals. When I hunt, I very often leave my horses at home, as I don't want the distraction of caring for them when I want to be hunting. I also worry about them when I tie them up and expect all to be okay when I come back hours later. If I put an Elk on the ground, I just go home and get them for a pack out. Then, who is responsible if a horse gets hurt, colics, or runs off and you can't find it? What if it throws a shoe? Are you camping in an area where they have adequate grazing? So many scenarios present themselves. Yes, there are some that will rent horses, so good luck, but I wouldn't be surprised if you have to post a significant security deposit.