This recipe is from an Anonymous Griller.

Howdy! This is a great one for throwing Mahi-Mahi fillets on the grill. (Works great for tuna, salmon & shark, too).

Mix 1 part teriyaki sauce, 1 part soy sauce, 1 part of your favorite BBQ sauce and just a splash of liquid smoke. Mix it up well. Let the fish soak it up. A few hours will do fine. Heat the grill so it's nice & hot. Quickly sear the fish on each side. Brush on the reaminder of the sauce as it cooks. Don't be bashful. Mahi-Mahi is great. No muddy / murky taste and big thick leafy chunks of
boneless meat.