I've played the games with my cousin's horse. She swears by Parelli, and said I had to learn the games before I could ride her horses. Her horses seem to enjoy the Parelli method, and she is a Parelli master, and even went and stayed with the Parelli's for a couple of weeks for their schooling thing.
A couple of weeks later I talked to my Grandfather, an ex-cowboy and current farrier and fox-hunter, and he said that the horses he's met who have been trailed with the Parelli method give him more trouble than any other horses he's worked with.
What is your opinion on Linda and Pat, and their training methods?