I tried quite a few, but this was the only shot I liked. I don't know if there is a supposed to be a certain amount of movement, but I didn't like the effect created by moving my camera quickly :)
It's nice to play around isn't it and this is an interesting effect. I did something similar a while ago with trees http://365project.org/susiemc/365/2015-11-09 I quite liked the effect but it isn't something I'd spend much time on.