Wow was doing a school project on flat earth vs round earth, and was reading through the forum, when i found this interesting topic, and had to register lol
well anyways flat earth society almost had me there, because I was just reading and the argument that the round earth people gave were the same thing and they really did not refute this at all.
Ok, this is what I think.
I totally agree with smarticus when he said water is weightless in water, but for that to actually make the water fly around it means that the the condition of water having to be in water has to be met at all times.
If we assume that the water does float because it is not affected by gravity, as soon as the part of the water start flying off, the outside is exposed from water and is not weightless anymore, meaning that gravity starts to work on the water again. Assuming that what smarticus said is true (which i am assuming) giant body of water still does not fly because every time it affect of gravity get canceled by buoyancy force and start to fly, the molecules that seperate from the other water molecule get affected by gravity instantaneously.
Which is my conclusion

thus this argument cannot be used against re cause it has a flaw xD (and yes my english is bad gosh ...)