If I understand correctly, you want an arrow to remain stuck in a dart board after it collides with it?
I believe this would involve reparenting the arrow after the collision is detected. You would make the arrow a child of the dartboard. If the dartboard moves, then the arrow will move with it. However, I am not sure if the appropriate position of the arrow will remain after the reparenting of the arrow. You may have to calculate relative positions and offset the arrow after reparenting it.
If the dartboard doesn't move, then stopping the arrow after a collision should make it appear like the arrow hit and got stuck into the board.