I use the clear stuff from B&Q (or similar, like petrol hose from my local farm supplier)....an extra 35 metre extension to the pole.....works great....though is prone to splits through work hardening....to get round this...I constantly change where the pole is collapsed down and put back on the roof (ie: not always fully collapsed) This saves stress areas, especially during cold weather. Apart from that...it's great...and anyway, it's cheap enough and light enough to replace every few months or so....or as necessary. I found the big hose too bulky and heavy to drag around....