How to cook a tri tip on the grill?

just wondering if anyone has a great way of cooking a tri tip on the grill good seasoning and directions on how long to cook it

INGREDIENTS
1/4 cup soy sauce
1/4 cup olive oil
2 tablespoons water
2 cloves garlic, peeled and chopped
ground black pepper to taste
4 pounds beef tri tip, cut into 1/2 inch slices

DIRECTIONS
In a large, non-reactive bowl, blend the soy sauce, olive oil, water, garlic, and pepper. place the beef tri tip in the marinade. Cover, and marinate in the refrigerator at least 4 hours.
Preheat an outdoor grill for high heat, and lightly oil grate.
Grill the beef slices 3 to 5 minutes per side, or to desired doneness. Discard remaining marinade.