Incompetent representation is grounds for a mistrial, or successful appeal. The prosecution wants to win, but they'd prefer to only have to win once. If you h

Incompetent representation is grounds for a mistrial, or successful appeal. The prosecution wants to win, but they'd prefer to only have to win once. If you have to go back to trial, you've already showed your hand, and the defense (who is now competent) can adapt to it.