What jumping qualities should you look for in a jumper prospect?

The jumping qualities that predict jumper success are specific and observable even in young horses jumping small fences, and evaluating a jumper prospect requires assessing these natural qualities rather than only the current jumping performance at the horse's existing training level. Scope — the natural physical ability to clear significantly larger fences than the horse is currently jumping — is the most fundamental jumper quality because it determines the competitive ceiling and because scope that is insufficient at lower levels cannot be trained into existence at higher levels. A horse that jumps small fences with obvious physical reserves — whose arc and technique suggest it could clear significantly more height without maximum effort — has the scope that competitive jumping requires; one that is already jumping at the upper limit of its apparent physical ability at modest heights will struggle as heights increase. Carefulness — the horse's natural inclination to be careful with its legs over fences, to fold its legs quickly and tightly and to actively avoid rail contact — is equally critical and is observable in young horses as a consistent pattern rather than a situational response. A horse that consistently tucks its legs cleanly and that occasionally touches a fence with an active, flinching response to the contact — suggesting it dislikes touching rails — is showing the carefulness that produces consistent clear rounds under pressure. Boldness and genuine courage to fences — the willingness to gallop forward to fences without the backing-off or hesitation that requires constant riding support — is a psychological quality as important as physical scope, because a scopey horse that is timid will not produce consistent clean rounds in competition where the pressure and environment change from schooling. The horse's technique — the specific way it uses its body through the jumping arc, including front end tuck, back use, and hind leg action — gives information about how the horse's jumping style will develop as heights increase and as training refines the raw natural ability.