I've lost count of the teams able to do full-court shots. While this does include a lot of teams with a 50-60% accuracy, I've seen many teams reach 90-95%, my own included (and we don't usually do that well).

One observation I've seen is that from the robots that have been shown (or that have been observed at private scrimmages), even average-joe teams can learn to make full-court shots easily once they tune their shooter.