I have been doing these windows for nearly three years but still find them a hassle to do......I use a pole (obviously) and squeegee down from the top, following the curved edge.....first the right side then the left side...then carry on squeegeeing the remaining water left in the middle. There is always a risk of leaving a blade mark doing it this way, so i always buff up with a fineweave in a clamp. I suppose the ideal way to do these windows would be to fan them with pole and squeegee, but I find this very difficult with an unger pole and squeegee. Squeegeeing the water right down to the bottom is also quite difficult as its level with your feet and you have to stand a distance away because of the flat glass window in front of you (which cant be stood on). I presume its a window crying out for a wagtail?? I must develop my pole skills.