I thought oh jeepers, here we go again with the same old boring stuff but actually, what good video clips.
Interesting and well explained.
Perry Tait isn't a window cleaner. When he uses a pole he just doesn't look natural IMHO. He does these videos, some of which are very informative, to promote his water fed pole business.
I've said before that Perry Tait does not and has never had to clean windows for a living.
So take whatever he says with a pinch of salt.
He might be able to speak about theory and how it should be done but his experience is lacking.
I saw one of his videos on here recently where he used a traffic cone to fill up a DI Vessel.
Says it all really.