Sure for $100.00 he can get a controller, but he doesn't mention if the trailer even has brakes. It might cost more than that.sure, it will tow it. Here is the thing, though. A nice Tekonsha controller in under $100. Why mess with safety or laws or physics to save $100? The truck is pre-wired for it, and you can set one up in an hour.
there are a lot of things you could do. You could punch a UFC fighter in the face. You could tow 10,000 pounds without an electronic brake... but why take that risk? Doesn't make it a good idea. Something else to consider is the laws. Now, not getting pulled over... but if you do get into an accident and it appears you were towing over your limit... now you are culpable. That could be anywhere from a reckless driving ticket, to someone suing your azz off.
So, really, is that worth saving $100?
Actually U-Haul and other trailer rentals usually are equipped with Surge brakes that apply hydraulic pressure to brakes based on pressure from the weight of the trailer against the surge controller mounted on the tongue of the trailer right at the hitch. Effective but a real pain for backing and not independently controllable going down steep grades so you need to make sure you cut your speed prior to descending and use engine braking. Which is good advice regardless of the brake system (if any) of any trailer.GWVR on the 5X8 U-haul trailers is 2700lbs and they don't have brakes. I'm shure that a lot of poeple overload them and tow with lesser vehicles.