Preheat oven to 350 F. Heat and brush a grill with the 1 - 2 tablespoons oil. Grill the fillets, skin-side up, for 4 minutes on each side.

In a small bowl, mix together the 1/2 cup oil, lemon juice, lime juice, herbs, salt, and pepper. Set aside.

Remove the grilled fillets and place in a large shallow baking pan. Brush the fillets with the reserved sauce and bake for 3 - 4 minutes, or until the fillets flake easily with a fork. Serve immediately.