i used oneof these poles on a job, first time at anything over 30ft.
it took me ages to just get it extended,
then when i was cleaning, the lads were just rolling about laughing.... when they calmed down a bit they said your moving full power but the brush not an inch.
thats how much flex you gotta shift before you get the brush moving.
10mins and somebody else had to have a go, cos of arm pump, constantly swapping grip to alternate the arms.
never again