The suggestions offered you in your other thread are still applicable.If the fellow has left UT, then I am out of options other then an out of state writ of execution ?
Probably easier to find his assets then him.
If you have a judgment and know of assets in Utah, you can attach those assets.
To repeat a question that was left unanswered in your previous thread and which Doodah has again asked here: What is the value of the judgment? If it is sizeable, hiring outside help (a private detective, a professional debt collection agency) would seem to make sense.