Place fish in Sunset Marinade for at least 15 minutes, but no more than 1 hour. Cover and refrigerate while marinating.
Assemble skewers, starting with fish, onion, bell pepper, then shrimp, onion, bell pepper, followed by scallop, onion, and bell pepper. Repeat until skewer is full, leaving 1 inch at each end of the skewer. Grill for about 12 minutes or until fish is just cooked through, turning skewers every 3 minutes.
Combine all ingredients in a shallow nonreactive bowl or dish.
Recipe courtesy Juan-Carlos Cruz