How about do what i do and attach a trigger to the base of the pole, the trigger that i use is the sane one of the cleantech backpack. i cut it of the backpack and fixed it to the base of the pole, and run a hose to the backpack to pole base and your 10mm hose to brush, i will take pics this week when i get time to show what i did it only cost £7.00 and iyou have total control