Just wanted to clarify that not all CTRs judge the rider...none of the ones I've been to (ECTRA rides) have had a rider score...so it probably depends on where you are. As far as endurance, yes, it's tough...you'd have to be certain that you know when it's too much and when to pull your horse. Like I said, I wish that it was a requirement for somebody to complete x number of CTRs successfully before even being allowed to compete endurance...just to be sure they know how to care for their horses. :)
A horse is the projection of peoples' views about themselves--strong, powerful, beautiful--and it has the capability of giving us escape from our mundane existance.