Andy Looney writes:
That can be tricky. Most of the time, prisoners end up getting squandered. Any old Icehouse vets want to help out with this one?
You want a 3 point prisoner exchanged. Then find someplace where your own 3 pointer is iced. Use the prisoner to back up the attackers such that the are all still pointing at your defender, but there's lots of room in front of them, and they are close together. Get your prisoner back. Then drop a small piece in front of the retreated attackers. You can now pick up one of those attackers as a new prisoner. Do this everywhere you can, and you'll have lots of prisoners. Ask the person who gave you the original prisoner how he wants you to use it, and then do so.