After letting the glass dry overnight, I touched the edges with a grinder just to clean it up a bit, then spread on the first layer of Marglass. Once it dried I used a 16" longboard to block it down flat, then put down another coat of Marglass and repeated the process until all the low spots were filled in and flat.
http://www.***boat.com/forums/attach...tid=5275&stc=1
When the marglass was as flat as I could make it, there were still lots of tiny little pinholes that needed to be filled, so I brushed on a thick coat of fiberglass resin, let it cure, then blocked that down too.
http://www.***boat.com/forums/attach...tid=5276&stc=1
After all that I finally took it to the gelcoat shop, where they sprayed red gel over the dash... I think it looks pretty good! Now I have to drill new holes and lay things out the way I want them.
http://www.***boat.com/forums/attach...tid=5277&stc=1