The basic problem with pulley rigs (when power casting) is you're lead is hanging on the hook snood,which will probably be only about 30lb line.The only way round it is to use snoods the same breaking strain as you're normal shockleader would be.As you know Chris I don;t have the power casting problem :lol2:

as long as the knot / bead  on the lead side is up against the swivel and the leader is the same as the line to the lead then the hook length can be as light as you like . it will carry no weight during the cast , it has more stretch than the lead length and if using an impact shield the shield would slide on the lead line if the stretch was used up for some reason
unless your pulley rig is made up with the swivel to the hook link side which is not how i was taught to make it  :ash22: