What I don't understand, is why people like Crocodile and Enel only change into their element (although sand isn't an element) when they get hit, even when they know that when the fist/foot/whatever will hit them..
In the final fight with Crocodile, Luffy could hit him because the blood on his hands made it impossible for Crocodile to disperse on impact.. If Crocodile would just disperse BEFORE he got hit he would've 0wnzd Luffy..
And it looks like Enel does the same thing..that's why Luffy can hit him..
I rewatched some eps earlier today and I saw something that I totally forgot..and whay might be the solution to the puzzle of who is gonna save Luffy/beat Enel..
The guy/gal that fixed the Going Merry...we don't know who it is, he/she is powerful enough not to be noticed by Enel (or just so weak :P)
I don't know if my speculations are right about who it is, so I'll just keep it to myself.. :P