Oh, Thank You for all the good information. I do not have a instructor, and want to learn all I can about jumping, so I do not hinder my horse, while jumping. I am going to read the other links given.
I was good until you recommended that one draw a line in the sand to indicate a safe take off spot. NOT a good idea at all! Who's looking at that line? If it's the rider, I can tell you exactly why the horse stops the next time. If it's the horse, I can answer that one, too! The biggest problem with riders and jumping is that they ride when jumping differently than they hack the horse. Who was ever going to explain that to the horse? Ride a completely straight line at the right, reasonable, responsible rhythm for the obstacle and quit trying to pick the distance and "get ready". Simple. Training it is the hard part.