Slow long crossers are much more difficult than fast. It has to do with the fact a fast target has a more predictable line. You must stay on line. A 40-50-60 yard crosser needs lots of lead unless it’s a dying target where there’s less lead but you still have to be in front and on the line. I shoot pull away on the real long ones. Tough shot, but the slow bastards at distance are the roughest of the bunch. High incomers at distance, 50-60 yards and seem to stop at the peak are another very difficult shot and tougher than the long crosser, imho.