If you can find a stripper that will cut the paint and leave the gelcoat that would be the way to go.
is the last resort as far as I am concerned.
But then I had to pain my Scamp
since I had to do fiberglass work and it had already been painted.
One can take it down to sound paint and epoxy prime the trailer and then sand level reprime and paint.
Others have done a better job than I have, but there it is.