I echo Mike's words about Float-On. I have about 30,000 miles on my trailer, I have made some custom fenders and bow stop with steps (easy way to get on the boat when docks are not handy. I only have a tandem trailer and a little overweight, consequently, the trailer flexes causing the fenders to crack. I replaced them with 3/16 thick aluminum, but they too cracked after 15,000 miles, then again after another 15,000 miles. Check the fenders after every trip for cracks, repair them immediately or the fender may chew up your trailer tires on a dark and lonely byway, miles from help.
I had a jerky Truck and Trailer shop in Palm Beach County replace my brake calipers and they really screw it up, causing loss of brake fluid and a burned-out hydraulic brake motor. Mike's suggestion of stainless steel rotors is a great suggestion. Float On was able to correct the issue which was an incorrect adapter plate that held the brake piston to the wheel. May I suggest placing a camera on the aft railing and running a wire to the cab of your truck so you can see behind you. The wireless camera gets too much interference from stray electrical currents, like a big semi passing close by. Also, check the placement of the bunks relative to the placement of the thru-hulls. My thru-hulls were located in the cut out for lifting straps, and when the trailer was not deep enough to unload the boat, the thru-hulls would hang upon the bunks, so the boat would not float off the trailer. Fortunately, I did not force it off, recognizing what had happened; thus averting a major problem.
Have lots of fun with your R27, they are made to travel, 😉 and may the trailer always be behind you 😱