Let me repeat, colby-smith is in Wisconsin, which is 1500 miles from salt water. If he tried those electric brakes in salt water, he would be changing to some type of hydraulic brakes. Or have his boat sling launched, so the trailer didn't get dunked.
Wisconsin is a great place, but it has fresh water lakes and rivers.
British Columbia, or Baja California have salt water. I assume you're in one or the other
Boris