I don't see a lot of indecision either, at least not in my ENFJ friend. More a matter of having the same problem as me, so smart and with so many different interests its hard to choose something. Otherwise they know exactly what they want and are hell-bent on getting it
We've been having a discussion on the manipulation thing. I don't see it. You guys are too direct when dealing with a confrontation and getting what you want. I see manipulation as the other person not knowing what you're after. You get them to go along with what you want and they're completely clueless.
My ENFJ friends will state exactly what it is they want up front and then use every advantage they can find to get it. I see that as more "Determination" and a sign of intelligence than actual "Manipulation".