Have you tried advertising at your local tack or feed store? You could place an flyer saying that you are willing to exercise horses, no compensation expected. I advertise this way when I need a rider to help me out with my mob. Also, if you're near a college/university, you could contact their rodeo club (if they have one). I know several of our local barrel racers own a couple of horses and like to have company as they ride. Just be sure that you're honest about your experience (or lack thereof) so you don't get onto a horse that is more than you can handle. Good luck - I remember the days when I would have killed to ride & had nowhere to do it
