User blog comment:Luffayking12/Doflamingo"s powers/@comment-5962458-20130702003452/@comment-50.193.143.222-20130703193014

I think what Luffay is saying is that he dominates them with HH, not to the point of foaming at the mouth and fainting but just enough for him to use his strings on stronger-willed people like Jozu. He's using the principle of controlling HH like Rayleigh taught Luffy how to do. I'm not saying that this is what DD is doing but it actually seems a lot more plausible than you're giving Luffayking credit for. It would open the door for more interesting use of HH instead of just blasting away fodder. We could eventually see Luffy using it in some way, like crushing a person's will while they're using Tekkai to break it before he smashes their jaw with a punch.