I've been contemplating adding trailer brakes to my telephone trailer, but realized my current brake controller might not work well off road. My toy hauler brakes work ok on the highway with my current controller, but I was thinking that this controller, or similar ones like it would be useless at low speed off road use. At low speeds the controller wouldn't have the inertia that is required to actuate the trailer brakes. A pressure actuated system would probably be more effective off road. What is the best off road system?