Grilled Fish on Pineapple Planks with Spicy Pineapple Salsa

Name: Grilled Fish on Pineapple Planks with Spicy Pineapple Salsa
Ingredients: 1 ripe pineapple; One 2-inch piece fresh ginger, peeled; 1/2 cup coarsely chopped fresh cilantro; 2 tablespoons vegetable oil, plus more for brushing; 2 ripe plum tomatoes, seeded and diced; 1 small orange bell pepper, finely chopped; 1 medium jalapeno, chopped (seeded, for less heat, if desired); Juice of 1 lime; 1/2 small red onion, finely chopped; Kosher salt; 2 tablespoons soy sauce; 1 tablespoon honey; Four 6-ounce skinless fillets bass or snapper