Is that sometimes I've chucked potions of heal and teleport to those blinded by an ap. Bear in mind they can't necessarily hear me, to know that I'm doing this.

They might have to toggle nogive off, cutting themselves of from this kind of help if things go wrong, because otherwise the ap can stick some rafts on them just before the blind, to nerf their Dodge. It just doesn't make sense that the character would choose to accept the rafts, of that they would choose to reject the help. Basically people need to stop doing the dumb exploit because there is no perfect mechanical solution. Which is why it is possible to exploit it.