my advise is this the more you spend on the first couple of cleans the better results you will have and the next visits onwards a breeze.
water fed pole is proberly the best way to clean any window but like most things preperation is the key element. taking your time here does pay as you may not be any quiker than trad but you need to look for the cleans after that because wfp is quicker by half but not from the start.
wooden frames scrub well then rinse frames well then do next window then back to rinse glass only thhen rinse again to be sure. sometime you will need to go back over one or two windows, check for milky drips if so go back over window untill drips are clear. This may seem to sound its taking ages but realy its not. on the 2nd and 3rd cleaning do the frames and glass but this time just rinse the glass by now you should be tell if its going to be ok and which windows need special attention. i have done this with many milky frames and altough i may have been slower than trad by the second time i would say i was abit quicker but still learning where to place hose ect.
these windows the little wooden milky crappy pains that never realy looked good i didnt want to do them so priced occordenly are now the houses i cant wait to get back to. a £20 house took hour by trad , now wfp takes 20mins and the custy is over the moon as they have never seen their frames looking so good and the glass is spotless. All of a sudden a maybe poorly priced house comes to an over priced house and some of the houses you thought were nice to do are now still good but not as good as the others.
wfp is an investment and i cant wait till iv completed a year as i know what 6 mths has done for me.and the future is looking very bright indeed.

van or trolly. had both from the start and well my trolly has been in shed now for 3mths, i wish i never wasted any money on it , lifting and pulling 25L about with a pole in hand as well is bad enough let alone the weight of what ever trolly battery, pump ect and to top it off steps, rough pathes gravel ect them run out off water and having to fill up or change containers A BIG NO THANKS from me that seem like too much unnesserssy hard work to me. Once you get the knack of were to put hose how your going to get all away round house which dosnt take long 2-3 times max and look what your carrying, a hose and a pole
so VAN MOUNT IT IS for me anyway