In a large bowl, combine pineapple, honeydew, strawberries and sugar; toss lightly to coat.
For a charcoal grill, grill pineapple and honeydew melon on the rack of an uncovered grill directly over medium coals for 1 to 2 minutes or until fruit is lightly browned with grill marks, turning to brown evenly. Place strawberries in a grill basket that has been lightly coated with nonstick cooking spray; grill for 1 to 2 minutes or until heated through, stirring occasionally*. (For a gas grill, preheat grill. Reduce heat to medium. Place fruit on grill rack over heat. Cover; grill as above.) Cut pineapple into quarters, if you like. Transfer fruit to 8 chilled salad plates. Sprinkle with basil. Serve with Honey Greek Yogurt Sauce. Makes 8 side-dish salads.
To make basil chiffonade, stack fresh basil leaves. Starting at a long edge, roll the leaves up. With a sharp knife, slice the roll crosswise into thin strips.
In a small bowl, combine one 6-ounce carton plain Greek yogurt, plain lowfat yogurt or dairy sour cream and 3 tablespoons wildflower honey or other honey. Makes about 3/4 cup.