We have Direct TV in our RV and this summer I noted a rural channel (that I do not get with my cable at home) and they had different things like that. I don't recall sheep trials, but I do recall them showing different sheep hearding dogs and explaining how they worked the sheep, cutting horse trials, and things of that nature. I didn't watch the channel very much, so maybe I misssed the sheep trials
It sounds like it might have been interesting!!!