although im not a shielder myself , and have only played shielder ~6 gens as heavy cav, i have learned from other shielders, that shield skill 6 is needed to ''effectivley'' protect people behind you from archery, and yes it increases your ''forcefield'' witch directley should aslo affect your block arch in melee combat, the hitting arround shields i do as my 2 hander needs timing and good movement, its basicly a back hit . what could be confusing you is the turn/lol stabbing, this is also how u sometimes get hit by a pike or 2 hander , but it seems like the person in question is hitting through somone else, same consept applys to shield, so watch well from witch side the initial stab is being turned and face that way slightly. hope this advise helps