Dock neighbor’s SeaRay cruiser always shines show room knock out bright.
He owns car washes, gave me a product they use at auto wash.
My research on here, Auto, fiberglass products very positive.
Obviously HB side walls don’t qualify, really not that curious to
try a test area on mine.

He cautioned me on the mix ratio and use precautions rubber gloves.
He apples with sprayer garden type then mist it with water no wipeing.
What he poured into a container for me without label etc.