Wash ducks thoroughly in cold water and dry. Season to taste with salt and pepper. Combine vinegar, lemon juice, olive oil, garlic, onions, pimento, soy sauce, oregano, salt & pepper. Marinate ducks in this mixture at least 8 hours. Cook over charcoal fire that has burned down low. Close top of grill. Cook about 1 1 2/ hours. Place 3 strips of bacon on each bird and cook for 30 minutes more.