My son had an older Sea-Ray and replaced the rub rails. His boat was about 24 foot and he had a little trouble getting rails long enough, but a special order from West Marine did the job.
He removed the old bent and beat rub rails by drilling the rivets. Then he filled the holes with epoxy filler and installed the new rails. I can't remember if he used pop rivets or self tapping SS screws. It took both of us to hold the rail around the curve of the bow, but it was only a 3 or 4 hour job and the results made the boat look like new.
Fred Messerly