You should build yourself a custom made boat trailer that wouldn't make any damages. Having a good boat trailer is just as important as owning a good boat. Most people will get everything they need to keep their boat running on MMIMarine.com, so you have to pay the same kind of attention to the trailer as well.
There is a basic flaw with the very concept of surge brakes, which is that there is no way to apply them without braking the tow vehicle. I am aware that they allegedly have a breakaway application device, but that is of no use when you simply need to apply brakes on the trailer, which you need to do non the occasion that the trailer is forced into an oscillation mode, either by the shockwave from a truck passing too close, or a number of other causes. And if your vehicle brakes fail, that surge brake is not available to slow you at all. So the first step is to replace the surgen brake with a system that can work. One "older concept" system uses the tow vehicle's power steering pressure and a control valve piloted by the tow vehicles brake system pressure to activate a hydraulic cylinder on the trailer that drives a secondary master cylinder. That system can have an electrical valve to provide remote operation of the trailer brakes, for emergency and parking use. Other systems have used tow vehicle engine vacuum to drive the trailers master cylinder. Of course, all of them cost more than a surge brake system, but all of them beat driving without any brakes.
I have stopped nmy van, while pulling a travel trailer, using the trailer brakes alone. It is not nearly as good as the four-wheel brakes were, but I did get stopped. That was when a front brake line bust on my 1985 Dodge van. Contrary to the claims, when you lose front brakes, you have no back brakes either. At least, not on a Dodge from that model year.
Warren, Ann and tekochip: Here's some more info about the driving conditions I was experiencing when the trailer brakes started smoking. That day I had only driven a short distance with the trailer, all on level roads. Before entering the freeway, I had driven less than two miles from home through town at a maxim speed of 35 mph. When I entered the freeway, the brakes started smoking within the first 500 yards. I was not using the brakes because I was just getting up to freeway speed.
Regarding riding the brakes, some interesting dynamics occur with surge brakes. In steep downhill situations, controlling the speed of the tow vehicle by using a low gear and not riding the brakes does not avoid the potential for the trailer brakes to overheat. Regardless of how the speed of the tow vehicle is controlled, if it creates a great enough resisting force against the trailer inertia, the surge actuator on the trailer will apply the trailer brakes.
One reason I was so surprised with the overheating was that just the week before this problem occurred I had towed the boat on a 500 mile trip. That trip included mountainous roads and 100 degree air temperatures. Although there were problems with individual brakes on the trailer, there was never any problem of all four wheels smoking. Interestingly, this trip included going down "The Grapevine" grade on Interstate 5, the main north-south highway in central California. This grade is about 6 miles long, has a 6% slope, and includes escape ramps for runaway trucks whose brakes fail. Despite the potential for the trailer brakes to overheat, the brakes appeared to handle it fine, with no smoking.
tekochip, that's a whole 'nother subject that many drivers have complained about here: tight curves on exit ramps, as well as very, very short exit ramps in some places. OTOH, when driving in New England, especially Massachusetts, many years ago, I was amazed at how poor the freeway exit signage was in letting people know what exits to take to get to specific places, (XYZ village name instead of Highway XX North, Highway XX South). It reminded me of some areas of Britain: you had to be a local to understand where you were going and which road took you there. The last time I drove there, in the early 2000s, I did see some improvement.
Warren, no offense taken; it was clear you don't drive the kind of roads I do. Those "Deadman's Curve" labels are not symbolic or imaginative, so my luck was actually quite good. The big problem I see is not enough warning symptoms before failure occurs, as well as brakes not designed to handle the amount of use required on long descents, no matter how much you use lower gears. We've got deer, too, up here and one took out the entire front end of my first husband's 1965 Mustang, which had a V-8 and a heck of a lot of steel in it. I bet you've got some great mud stories, though--and that's *not* sarcastic.
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