I follow this guy on FB, Ali Goorchian. He's the president of the Persian Horseback Archery Association. Thought I'd share this video - it's the only one I've found on youtube so far - all the rest are on FB. He teaches clinics, often posts go-pro vids of riding his horse, has the most stunning Arabians, and they often ride with loose horses - and having done that with Siesta and Trigger one day (Siesta being a retired appaloosa gelding and old fart instigator who belongs to someone else) I can tell you - riding with loose horses takes skill and patience. The loose horses will do their best to tempt the others into playing and acting silly.