As anyone who owns a pop top with a shower knows, the shower head is very low.
Ok if you are 4'5" :)
I have recent purchased a new 16.67-5 Jayco Journey Outback and my first project was to rectify this by extending the shower head from the hose with a length of PVC pipe and a couple of screw fittings - all from Bunnings, finishing off with a few coats of silver paint.
Below attached pics of the components and the final product. Sorry I could not work out how to rotate the last two pics.