Hi Phill,
Please don’t worry about the water as it beads on the glass. There are two main types of glazing, hydrophobic (the glass that beads) and hydrophilic (the glass that runs). The difference between the two is down to the manufacturing process or post treatments with chemicals.
Both types of gazing offer good results with water fed pole cleaning, however, when the water beads on hydrophobic glass the liquid forms drops, which take longer to evaporate than hydrophilic glass and the spread water. The longer pure water is in contact with air, the more chance that it will absorb dust and dirt from the surrounding air and this will increase the chance of spotting. This means, as stated, that rinsing over and over again will have little effect and has more to do with weather/site conditions. Once the basics are understood you can work with strengths of WFP and avoid the weaknesses.
Just ensure that all the patterns that the bristles leave on the glass are rinsed away and you will be fine.
Best Regards,
Carl,
Clearview plus Ltd.