I use external pole hose, as in I don't have the pole hose running through the pole. There's quite a few reasons why I do this, but it's a quick way to work, and I just have to bend any handy bit of pole hose to stop my water flow. It's easier and quicker than an aquadapter (I had two, since sold).
And on larger stuff, I take a short lightweight fishing pole with an adapter on the end. I'll clean the high windows first, then close the pole, screw off the brush head, and attach it to the short mega lightweight pole and clean the ground floor windows. Fast, and so easy it feels like cheating, but it's only easy to do because I work with external pole hose.
There's a knack to it, but once you've got it, it's easy. I know quite a few local lads who work this way.