Steel wool for hard water spots on glass?

quarryninja

We have very hard water where I live and it also comes hot out of tap so that worsens things. I try to be really careful when detailing but my efforts have been futile!

It's been less than a month since I've had my Z and I already have water spots on the windshield and all other glass surfaces

After looking around in the interwebs, first I tried some white vinegar but it didn't work at all; absolutely no change whatsoever.

Next I bought some 0000 steel wool after reading wonders about it and seeing some youtube videos. I was really excited at first but a bit skeptical, so I decided to try it first on my DD. It worked really good! It removed all water spots and contaminants... but after close inspection I noticed that it left a bunch of tiny scratches all over the window. So that ain't going near my Z.

As a last resource I took out my polisher and some meg's compound and polished the glass. After several passes I was able to get the windows perfectly clear but after washing I noticed that the water "sticks" really bad (even worse than before) where I polished, it doesn't drip down like it does on paint.

Am I doing something wrong?
Any recommendations?
Has anyone had good results with the steel wool?