"Don't whine. Don't complain. Don't make excuses." - John Wooden
Zone defenses have advantages...and weaknesses. We need to focus on their weaknesses - vulnerability to transition, no defined rebounding player coverage, our ability to choose where to attack, the potential to be outnumbered (overload) or deformed (by shot fakes and pass fakes).
This drill sets up three offensive players against the top of the 2-3 zone and adds a (constraint) rule that X5 cannot move above the bottom of the circle.
The goal of the offense is to create an open shot. We can build in additional constraints, such as 'x number of passes' before a shot.
Use screens to open the middle.
Use screens to reverse the ball and frustrate defenders.
Use the dribble and cutting to move the defense.
Get players to use their imagination.
You can have a set number of possessions or have offense stay if they score.