The only thing standing in between you and owning any sort of "parking enforcement device" is a $5-$15 tool. A "security torx" is usually just a 3/8" or 1/4" torx bolt with a hollow center (get just the bit for like 25 cents on eBay) and normal boots use tubular locks, almost always shitty cheap ones that can be jimmied by a $15 impressioning tool.

Learn about physical security, it's limits and weaknesses, and learn some simple lock-smithing/-picking. It will come in handy one day and beyond some advanced tools, most of it can be found very cheaply or even made if you've got a knack for simple metal working. Most locks in this country can't put up with a simple propane torch, let alone a bump key, rake, or jiggler.