Matching gloss

I just finished an epoxy repair to a cracked stringer at the nose. My question is, how do I finish the repair to match the gloss coat of the original board? I’ve tried sanding and polishing until 600 wet/dry but still can’t seem to match the shine. Should I varnish, polyurethane, ZSPAR the repair?

…HOME DEPOT:Painter’s Choice acrylic paints(I think that’s the name???)2.50 a can,get the clear gloss.Herb