Video here: https://www.youtube.com/watch?v=mv-Hu5-vcCs
I recently bought the 30ft Facelift Renegade Aluminium pole
http://www.windowcleaningwarehouse.co.uk/facelift-renegade-alu.html and found I only needed the bottom pole extension for the odd job. But only the bottom pole is protected with a rubber foot, and the aluminium got pretty banged up pretty quickly without said bottom extension. Thus I decided to print a custom foot for it, and add a hole to hold and protect the pole hose.
As of july 16 this has not been tested properly in the field to see how much it holds up to, and I probably will have to print a version in ABS instead of PLA. But I will do a follow up.
It's designed in OpenSCAD and can easily be modified to fit any pole size. The included stl fits the second to last pole on my 30ft Facelift Renegade.