i use a 6m. pulex pole that is a 3 parter , 2 metres each section. i got it online i think it was under £30 .
for the most part i use only the first2 sections, i put a small ladder agenst the side of conservatory and pole the window above while standing on it. this makes the job Really easy
Use a wagtail flipper on my pole ,it works great
one thing i always look for when im ready to start is what the con roof is made of,some are made of thin glass so be careful not to bang your pole anywhere near it