Journey On rides on a trailer with Carlisle Hydrostar Electric brakes. These, like any electric-hydraulic brake, have an actuator which replaces the surge brake master cylinder. Brake pressure is applied by the actuator pump which is activated by the controller on the truck. The rest of the braking system is the same. Sorry if you don't need this lecture, but please read on.
For the weight of the C-25, trailer and load, I feel that these brakes make the difference between an easy drive and a white knuckle tow. Also, when you back uphill, they don't automatically come on as surge brakes do. And when you back downhill, such as a launch ramp, they work swell as surge brakes don't. I'm a great believer in these brakes for a C-25 or heavier, especially if you have a 1/2 truck (or equivalent.) These brakes came stock from E-Z Loader when I bought the boat, though they weren't free.
That said, I'm not sure that they are needed on a C-22. I allow you to make that judgment.
I believe, Boris