In a large sealable bag, combine ginger, garlic, pineapple juice, honey, Pre-Protein®20, and green onions; mix well. Place salmon in bag and seal tightly. Turn bag gently to distribute marinade. Place in refrigeration for 15-30 minutes.
Preheat grill or outdoor grill for medium heat and lightly oil grate.
Remove salmon from marinade and remove excess marinade. Grill salmon for 12-15 minutes per inch of thickness, or until salmon flakes easily with a fork.