Season Salmon Fillet (3) with Killer Hogs BBQ Rub (1/4 cup) and rest at room temperature for 30 minutes.
Soak your Cedar Plank in water for ½ hour; prepare the grill for direct cooking holding temperature at 300 degrees F (150 degrees C).
Arrange Salmon on grilling plank and place on the center of the cooking grate. Cook salmon for approximately 20 minutes.
In a small saucepot add Brown Sugar (1/4 cup), Honey (2 tablespoon), Soy Sauce (1/4 cup), Balsamic Vinegar (1/4 cup), Garlic (1 teaspoon), Crushed Red Pepper Flakes (1 teaspoon). Cook over medium high heat for 5-7 minutes until sauce reduces by half. It should have a syrup-like consistency.
Brush each filet with Honey Balsamic reduction. Cook for an additional 10 minutes until salmon flakes. Remove from grill. Serve.