ronnie, i have just taught my new guy to rinse off, ... he said over a con roof its hard....
i showed him how to do it.
pull the pole back ever so slightly.. position your body so it does not hurt anywhere...
even at full stretch from the side of a conservatory.
make the pole work for you...
sometimes i rest it between my legs... or hold it above my head at an angle....
it takes seconds.
you are experienced enough to know to use technique to take the stran.

... i enjoy the rinse bit... as the thing is almost done.