Towing 4-wheels down.....braking required for vehicle?

Most states require trailer brakes at 3000lb (some are slightly different weights).

How much does your Jeep weigh? I'm guessing it's over 3000lb.

Take a good look at the NAS Ready Brake kit. The brake actuator sits between the receiver and the tow bar. An aircraft quality wire runs between the brake actuator and the brake pedal on the Jeep. (There are actually two wires but the connect together). Easy to set up, virtually fool proof, no power needed at the Jeep.

NAS also has the same type setup in case the tow bar fails for emergency braking.

Grab your popcorn, this will get good!

-To recap, you've been towing a toad (not the wrangler, presumably something that needed the front wheels off the pavement to tow, on a dolly that had only breakaway brakes, but no (surge or electrical) service brakes? While that isn't really possible unless the service brakes weren't working (and subsequently the breakaway would also not work), you "were" comfortable with that setup but now questioning because you have a 4 down setup or a heavier toad, or just now learned that you may not have been as "safe" as you thought you were?

Just looking for some context.

FWIW, the "safest" solution is to have brakes on the toad and 9 of 10 rvnetters will tell you the same thing.

The real question is not for us to comment on and that is how safe is safe enough?
There's enough threads on this to choke a horse, where the best course of action may not be re-gurgitating all of that, but rather let you read the volumes of words already in print and let you decide for yourself.