I will marinade my mack fillets in a little teriyaki sauce, then add a little olive oil right before putting it on the grill. The teriyaki has a little sweetness to it that seems to cut the naturally stronger mack flavor. Grill on an oil coated grid, and when you place it on it move it back and forth a tad and then it won't stick too bad to the grid. Don't soak it too long in the teriyaki as it will get too salty.