I use a small trolley with 25 ltr containers,i so jobs i leave it at the gate and attach my 30 metre hose,I take it through the house to do back windows with probs These trads forget to mention drag ladders through peoples homes scuffing wall paper and getting stuck in hallways setting ladders on slippery paving slabs,climbing a triple ladder to reach that 40 foot window with your heart in your mouth etc.
Water fed pole every time for me and i put up with the hoses and the extra money in my bank account