Customer: I need a sample letter asking a judge for probation at my son's readiness hearing (he's 20 years old). The letters are best when they come from the heart, but here are some suggestions of topics that you may want to address.You will also want to include proof that you have paid all your fines, court costs, probation fees, etc. Mail a copy to the judge, DA's office, and court clerk. Court Forms and Instructions. Completing the Forms. When placed on probation, probationers will be required to sign off acknowledging having read and agreed to the conditions of probation. I would much more prefer to use some sort of template and fill in the information than to write the letter blindly. Offer to provide additional information or support as needed.