Just curious if anyone knows how a flail would have been used against plate armor. I am sure you would use it to attack the weak spots like the joints of the armor itself but it seems unlikely that it would have been used to directly strike the breastplate. Another question I have is what would happen if a flail actually struck the visor of the helmet. I would imagine this part of the helmet was a weak spot but to be honest I have never held one so could be wrong about that. While on the topic of thew helmet any guesses as to how much force it would take to make the impact against the helmet itself cause serious damage to the person wearing the helmet. I heard that the impact of some blunt weapons could cause concussions but is it likely that a person could cause enough of an impact to kill the person.