The last big thing to do is the bottom fill and hot coat. It's like doing the top. I start by sanding the laps and any high spots. Then I tape off the rails.
For the bottom it only takes about 12 oz. of resin to do a fill coat. I apply that and let it level itself out for about 10 minutes. Next I cure it.
After it's cured I sand the bottom and fins with 100 grit. It takes about the same amount of resin for the hot coat.
This is how it looks after it's cured. I still have a lot of wet sanding to do.
I'm happy with how the fins and board are turning out. It's best to let the resin cure for a couple days before doing my wet sanding.
Thanks for your support. Keep surfing.