Dear Rich Staff was in your position, we'd probably give up on the $800.
Chapter 11. One hurdle is the bankruptcy. If the judgment were incurred prior to the filing of the bankruptcy, it's going to be tricky (maybe impossible) to enforce. We're guessing that judgments and debts like yours (unsecured creditors) were scrubbed when the company emerged from Chapter 11 bankruptcy.
Even if we're wrong ... Absent the bankruptcy, it's sometimes cost-prohibitive to enforce a debt of less than a thousand dollars. The good news is that you have plenty of time -- in some states up to 20 years -- to enforce a judgment (statutes vary). You can track down a business's assets using online services. If you're handling it without an attorney, you'll need to do paperwork -- for example, maybe file an Abstract of Judgment -- depending on the state law where the judgment is enforced.