I put the fish in a mold that can be covered by the Silpat. I don't measure, but I pour a little sesame seed oil, sliced green onions and/or lemon grass, lots of garlic and ginger. Bake for about 15 minutes at 375 (longer if it's a big/thick fish). After it's done, drizzle a little soy sauce on it. You could also drizzle a little Chinese vinegar (dark) and/or our DAH Balsamic for a nice flavored sauce.
You can also do this on the Flexipat if you want a crisper texture (best when the fish still has the skin on it.)