This is a drill designed to practise switching defences and offence against them.

Team A has the ball and Team B is on defence, the coach yells out the next two trips (e.g. Offence vs. zone, pick up full court on a make) in this case team A would play offense against a zone and would play full court pressure defence if they scored. Once the second possesion is over the drill starts over.

Practise concentration and game like situations.

Give the defence a extra defender and play 5 on 6

Practise situations that you will face in games.