Only going by what the guys post on the w/c thread, the pole I used 24 years ago was at least 24 feet long, aluminium and was used with a T bar and squeegee. It was only used, as I did'nt like ladders, something to do with the inner ear !
Steve
I have used loads of machines and for part time, cleaning would recommend the Sabrina Maxi, but with a 25 foot hose and brass couplings, also, by changing the wand to a single jet, you will have similar performance to a Ninja on the primary vacuum only.