Re: Trailer Brakes
I currently own four boats on trailers. One doesn't have brakes, the other three braking systems are in various stages of needing repair. I have tried waterproof electric, I have used surge, and standard electric. Frankly I have never had a set of trailer brakes last more than about a year no matter what I do. So I have just given up. I got a larger tow vehicle, rebuilt the braking system to oversize it, and took all the brakes off the trailers. Unless you are never going to ramp launch the boat, I don't think any braking system is going to last long term (and yes I know someone here will have a set that has worked for them).
My heaviest towed boat btw is 5,500lbs including trailer.