Things like Iron Will which reduce struggling by 75%, does it also affect how much the survivors can struggle while being reeled in by the chain? Please only answer if you've tested or know for certain, no guesses please.
You mean boil over?
Doubt it. They've mentioned they don't want perks negating a killers power that directly which is why they stopped Sabo from working on traps.
No, perks such as Boil Over do not work when you are harpooned.
No, I said Iron Will but I meant Iron Grasp, which is basically reverse Boil Over.
Again, no these perks do not work on the Killer's Power.