I've tried about everything over the last 15 years, and I always go back to shooting sticks or a hatch bipod. They are easier to carry and maneuver on moving coyotes. But I only day hunt and I'm sitting all the time.
That's all I have done for the last 13 years. I have quite a few large ranches I do coyote control for. I use a 6mm variant a lot when fur isn't worth anything. I've never felt the need to use anything larger than that, but that's my personal preference.