Preheat oven to 400 degrees F. Coat cooking grate of outdoor grill with cooking spray. Preheat outdoor grill to medium-high heat.
In a small bowl, combine the peanuts, canola oil, sugar, 1/2 teaspoon pepper and 1/4 teaspoon salt.; spread mixture in a single layer on a baking sheet.
Bake for 10 to 12 minutes, stirring once. Cool.
Cook edamame in boiling water to cover 2 minutes or until crisp-tender, drain. Plunge into ice water to stop the cooking process, drain and set aside.
Peel shrimp, leaving tails on; devein, if desired. Thread 4 shrimp onto each skewer. Set aside.
Peel 4 oranges, and cut each into 6 (1⁄2-inch-thick) slices; set slices aside.
Grate remaining orange to equal 1⁄2 teaspoon grated rind in a small bowl; squeeze juice from orange into bowl. Add hoisin sauce, lime juice, garlic and ginger to bowl, and stir until blended. Remove 2 tablespoons citrus dressing, and brush evenly on shrimp. Reserve remaining dressing.
Grill shrimp skewers 2 minutes on each side or just until done. Sprinkle with salt and pepper to taste.
Arrange lettuce and watercress on 4 serving plates, and top evenly with edamame, orange slices, watermelon, and green onions. Top each salad with a shrimp skewer. Sprinkle evenly with cilantro, basil, and peanut mixture; drizzle with reserved citrus dressing.
Cook's note: 2 cups uncooked fresh green shelled soybeans may be substituted for frozen. Boil soybeans in lightly salted water to cover 15 to 20 minutes or until crisp-tender, drain. Plunge into ice water to stop the cooking process; drain. Proceed with recipe as directed. Edamame may also be found fully cooked and ready to eat in the produce section of most supermarkets.