One of the major problems in this industry is credit applications (or the lack thereof). Did you ask for the debtor to complete one before you extended credit to him, and if so, did you ask for banking information? (another way is to ask whomever paid the non-paying broker, if they paid him and if so, would they supply proof (back and front of cheque). The whole idea of course is if you have accurate banking information, you can go the garnishment route.
The other route is to file for a financial hearing. The principal then has to appear and under oath, must truthfully answer questions such as where do they bank. If they fail to appear, another hearing is scheduled. If they do not appear for the 2nd hearing, you can apply to a Superior Court Judge to issue a warrant of committal for failing to appear. The judge can then issue a warrant for that person's arrest for a maximum of 5 days (first time).
In the 25 years that I have been practicing, only once did my persistence result in the incarceration of the debtor (arrested on a Friday by YRP, released Sunday night, call from his lawyer Monday morning wanting to know to whom to make the cheque payable.)
You don't need a bailiff unless you are repossessing equipment (very costly) I can give you a game plan if you like. PM me.