Every summer we go to an event where they have those portacabin shower units. The ones that have separate cubicles with half shower/half changing area with no room to swing a cat and one measley hook on the door. Then after 2 people have used them everything is wet and flooded. I can't help thinking there must be a knack to showering in these without banging your head to reach for shampoo on the floor and keeping towel/clothes dry. Help!