I have an old fibre glass pole I use. took brush & fittings off, fitted a spray unit from a pump up garden spray onto top of pole just with electrical tape, other end of pipe goes straight into screw fitting on trigger part of 5 Litre pump.
Pump up, hit the trigger and you instantly have a very long extendable 5 Litre Pump sprayer. By the time you have sprayed all back of property simply drop this pole down, pick up your brush pole and away you go! Very simple and very effective....
Or Alterantivley,
I am just waiting on delivery of two Fan Jets from the Tinternet, when they arrive I will be drilling two extra holes in my brush on my 27ft CLX and removing a couple of bristles to do this, then have a quick release fitting to those two fan jets with a pipe wrapped around outside of pole, held with velcro straps (Ebay £2.) Then straight back to 5 Litre Pump up sprayer full of TFR or Virasol .
pump and spray with Fan jets, turn off Pump sprayer, turn on water supply thru normal jets and scrub/rinse away. two jobs completed in minutes with just one brush! End of job just remove outer pipe wrap it up, shove in van till next job!
One brush head, two sets of Jets, two pipes, One Job completed very very quickly!
Hope all that makes sense. Good luck.
Goochie