hi
I am restoring an old Tiga race long board, 3.6m of retro!

ive filled a few dings and painted a two pack polyurethane finish coat ( PPC Whitecoat) to seal up the epoxy repairs & seal the board edges where the two plastic halves were joined. This paint leaves a high gloss surface that is very very tough.

the original finish was a semi gloss plastic, so my mind was wondering what's considered the fastest surface these days?
I have a FW 167 that has a matt finish.

i would like to, once the paint has fully dried, sand it back to remove the painting imperfections, so it will then be mstt, but I could then buff it to gloss again. ( same as buffing an auto finish).

So so what's the quickest?
thanks
nigel