I think there are fewer bounces around now, in the U.K. anyway. I started out over here at Novice level (does that equate to U.S. Training level?) in '88 and encountered plenty of bounces, including a totally notorious double bounce on a novice track. It was on very slightly uphill ground, which helped, and we were all terrified of it, so rode it with proper attention... i can't recall it causing many problems, amazingly. I doubt you'd encounter such a thing now!