Have players lined up either side of the lane. When the whistle is blown the players will sprint out to the cones and do a close-out.
They will then slide to the corner. Once they get to the corner, they will sprint to the half way line. At the half way line they do a defensive slide to the other sideline.
To finish they will back pedal to the free throw line.
Watch for correct defensive technique and also want you players to be yelling ball when they close-out. This drill needs a lot of energy from the coaches and players.
Rebounding is the least glamorous thing in basketball and one of the most decisive. It is also almost entirely a habit, which means it is entirely coachable.
Good spacing is only the start. The best modern offences teach players to attack the defence's rotations and play in a permanent 4-on-3 - here is how to coach that read.
The ball screen produces almost half of all professional offensive possessions, yet most teams still teach it as a memorised play. The modern approach trains the read - giving players a framework to decide based on what the defence does, not what the coach called.