It's your motion, so as soon as you are called to the bar
, you say something like, "Good morning, your honor, John Doe, Petitioner, appearing pro se." The judge will probably acknowledge you and say something like, "I see you have a motion to strike here." Then you just start your presentation, e.g., "Your honor, Respondent has filed an untimely Response to my Petition for dissolution of marriage. I believe that Respondent's filing does not operate as a general appearance sufficient to overcome my right to a default in this matter, because...blah, blah blah...."
If the judge decides in your favor (and, he/she probably will take the matter into chambers and not make an immediate ruling, because you are effectively asking the court to hold that a Judicial Council Rule of Court is in violation of an express Section of the Family Code. Judges are reluctant to get into this sort of issue, without a great deal of consideration
. So, I doubt that the issue of taking an immediate default will arise. But, if for some reason it does, you can ask the court to enter an immediate default, without your having to prepare an Orders after Hearing form, since the Respondent has not as a matter of law appeared, and so there is no one else to notify about the court's ruling.
Hope this helps.