Well, in the most recent chapter Luffy anounced that he´s got some new moves that he would like to try out. While I have zero idea´s what they might be I think it might be fun to start a speculation thread about it.
So I´ll make the start. Though I don´t know what moves Luffy will show us, I´m sure that at least one of them will be inspired on something that we´ve seen in this arc so far. Remember back at the Arlong arc, where Luffy used Gomu Gomu no Kazaguruma on Mohmoo and the Mermen? It was obviously inspired on Gen-san´s pinwheel. And I think that something like that might be the case here again. However I don´t have any idea what might have inspired him. I just mentioned it as food for thought. Maybe some of you guys will hit the bullseye.
Happy speculating.