Rule of Criminal Procedure 10

See Stormwind Rules of Criminal Procedure.

Rule 10. Verdict.
In any case tried before it, the court must find the defendant guilty or not guilty. If a party requests before the finding of guilty or not guilty, the court must state its specific findings of fact in open court or in a written decision or opinion.

Commentary
Yes, you can request that the magistrate give an exact accounting of his reasoning! But don't do this just to be a butt to the guy; he's here to help you get a resolution for your case.

This should really only be used to "preserve the record" in case of an appeal, which should be agreed to as part of your RP plot. If the magistrate simply isn't able to invest the time to write it out, don't worry; an appeal will work fine without it.