You need a baseplate. I'm not going to say the car doesn't have a bumper, because there is a small, crushable metal and plastic piece a few inches behind the fascia that Honda calls a bumper. But is not designed to be pulled.
BlueOx installs their baseplate to the sides of the reinforced section of the front end sheet metal that Honda uses to mount this bumper. After installation of the base plate, the bumper is reinstalled, and to some extent remains collapsible.
Roadmaster installs their towing bracket system in place of the bumper, which is removed permanently. This is one of those rare Roadmaster installations that actually resembles a baseplate, rather than a pair of independent brackets to be connected by a removable external crossbar. The crossbar is still required.
Considering the need for a braking system, a cheap A-frame towbar is not the least expensive solution. The least expensive solution including braking would likely be the ReadyBrute (towbar including ReadyBrake surge braking system) attached to the BlueOx baseplate.
Aside from the cost of the piece (about $400) the installation of the baseplate will take something like four man-hours on the Fit. I did mine myself, about six hours work lying on a hot driveway, spread over two days. It could be another couple hours routing and tying down the cable for a surge braking system. Both jobs are better done by someone who has experience installing both on that type of car, DIY has some learning curves.
Figure on buying a drill bit for each hole, or pair of holes, you have to drill or ream out. The front end of the Fit includes some pretty tough pieces of metal (high strength means less weight?) that quickly chew up good, expensive, drill bits.
Tom Test
Itasca Spirit 29B