Replacement, or new brakes
Jack,I don't have anything to add to the previous comments about whether you need brakes. (Except that 3000 pounds doesn't seem like a small amount of weight to be stopping by pushing on the trailer tongue, which is a good 15 feet from the center of gravity of boat trailer.) But if you decide to add the brakes: we did so last summer (actually, replaced 100% of our existing brake system), and it took a couple of easy days. I described how it went in a few posts dated 9/5/01, 12/9/01, and 12/13/01. You can search in the archives on "Jay trailer brake" with every option turned on, and you should bring up the old posts. I don't think there would be any difference between adding replacing brakes, provided that each end of your axle has a square plate welded on, with a bolt hole in each upper corner to attach the calipers to. Good luck, and I'd be happy to answer any questions.Jay