Allow the fillets to marinate for about 30 minutes or up to 1 hour. Grill the fish, skin side down, over medium, indirect flame, flipping after about 4 minutes. Pull the fish off the heat source just before it’s done, allowing it to rest, loosely covered in foil for 2 minutes before serving. This will allow your fish to cook through from the residual heat as opposed to becoming overdone on the exterior. Serve with lemon wedges.