ive converted a small unger trad pole into a wfp but to be honest i only use it for cleaning the van with a vikan brush on the end.
i carry 2 poles in the van
22ft CLX with standard angle adaptor/flocked brush
25ft SLX with carbon gooseneck/radius sill brush(medium)
i tend to mainly use the 25ft SLX for everything including ground floor.if its a really tight space i trad the windows.its easier and quicker than going back to the van for another pole!!
