Hi Dai
This was my first day using my wagtail. To be honest at first it was a bit of a pane. I realized later that this was mostly because i was sort of forcing it to do its job. I even left it in my bucket for most of the morning and went back too my 18inch unger squeegy. Later today i had another try with it and really got the hang of it . Too quote star wars " you really have too let go and let the force take you" what i mean is i finaly started to just clean the window without thinking of twisting the handle to make it fan the glass and i found it naturaly faned from side to side as i needed it too. I also discovered its great for cleaning in tight places becouse it finds the best angle. if you know what i mean.
overall i would recomend this tool and plan too continue to work on my technique becouse i can see its going to speed me along and thats to me what its all about as well as clean well obviously. hope this helps
Mike