My new horse is horribly trail sour! He's fine if you have an arena to work in (which, now that he's moved, I don't), but I mostly trail ride, so he's got some relearning to do! Seems his last owner couldn't control him, and he would bolt back to the barn or just not leave at all...sooooo...yeah...I hear ya on the 'fun' attitude! My boy likes to rear up occasionally too...makes the experience all the more exciting...Not! What a brat!
"The ideal horseman has the courage of a lion, the patience of a saint, and the hands of a woman..."