Grilled Shrimp & Pineapple

1 lb uncooked jumbo shrimp 1/2 fresh pineapple 6 tablespoons orange marmalade , divided 1/2 cup water 1 tablespoon soy sauce couple dashes hot sauce[...]

1 (14 ounce) package firm tofu , quartered lengthwise (I used closer to 10 ounces) 1 lb medium shrimp , shelled and deveined (see note in description) 1/4 cup[...]

1 (14 ounce) package firm tofu , quartered lengthwise 1 lb medium shrimp , shells intact, deveined 1/4 cup unseasoned rice wine vinegar 2 tablespoons honey 2[...]