I bought one, couldn't get on with it either, kept leaving trace's of water on the glass, turning or fanning on glass impossible
without leaving water trace's, i boiled the end tips reshaped them, cooled them under cold water, tried again on glass, same
problems, even changed my technique using different angle's with the squeegee handle, very disappointed with it to be honest
after all the hype its been given. written it off now as a complete waste of money.
Lal