Yeah, agree with
@TotalyHucked. If you really want it more shiny I might give that patina juice stuff a shot. PS, alot of RV folks swear by Zep floor polish. It was a thing before the patina juice and I wonder if it’s the same. Wipe it on a faded painted or gel coat surface and it lasts a year or more in the sun.
But have you actually polished it yet? It doesn’t take much if it’s old original paint. That stuff is really soft comparatively. Rubbing compound is too harsh. Use polish. And if you don’t have an actual polisher, as quick as it shines up, you could easily use a bonnet attached to a drill motor.