Good advice Karlosdaze
Another thought with regards your technique.
When you use the applicator, try not to have it to wet or your water to soapy.
Keep just inside the outer edges of the glass.
However you may start squeegeeing, when you begin your 'downward' stroke, allow the squeegee to drop into an almost vertical position, therefore as you begin this downward stroke your squeegee will also be sliding towards the 'outer' edge of the window pane, covering any lines that may have shown.
allow sufficient overlap as your squeegee goes from left to right (& right-left too
) making sure the 'top' edge of the squeegee is the leading edge, and that by thetime you have got to the other side of the pane your squeegee is almost horizontal, allowing your squeegee to drop into a vertical line without excessive rotating of the squeegee, which can cause 'kicks'.
Not meaning to sound like I am teaching you to suck eggs
But add that to Karlosdaze's advice and there may be something there that may help!
Ian