There's different ways to do it.1. On sanded hotcoat to 150 grit and glosscoat over (careful not to sand through the gloss and hit the pinline)2. If you want to avoid the potential of sanding through you can do your deck laminations in 2 steps and put the pin in between them. First do a 1" wide hotcoat where your pinline will be, let cure, and sand with 220 grit along the direction of the pinline (circular sanding will create micro channels that the pinline can bleed under the tape. Pinline with a Posca pen and let dry for a little while then laminate your 2nd deck layer over that. Now your pinline is protected from sanding and looks the same as on top of the glass.