There is something that has troubled my mind lately. When you attempt special attacks like grapple, disarm, trip, etc., you have to do an opposed STR check usually I think, though with trip you can also use DEX. Is there any effect if the target is flat footed or feinted or the like when you make such an opposed check? It gives me the impression that the defender could be at a disadvantage, as they are defending (opposing) such an attack. Can you infer this from the rule flat footed (and the like), or not?