Hot water for me helps. A good sturdy pole like my SLX rather than fibreglass or hybrid. 6 jets ive found to be really beneficial. An electric reel which makes winding in easier and a valve tap by my side to help switch the water. All of these things make my working day more beneficial BUT.........
The thing ive come to learn most, its all regardless unless you have a good brush, which lets face it does the actual job.
For me I like stiff short bristles and dual trims that dont splay too much on the window. So I have to say my brush, 14inch dual trim streamline.