We've seen them parked along Ave. Rafael Melgar (the ocean front road) adjacent to town. We've taken one before to get back to our hotel. Going from where we stay (Fiesta Americana), we have one of the bellhops arrange for one but I usually see one parked out front. On hailing cabs in Coz, it's not like NYC where you have empty cabs driving around looking for fares. In Coz they generally sit around in popular areas awaiting you to find them. On occasion, you can find one driving around.... or wait, they'll ask you if you need a ride.