I had this idea in my mind but didn't have time to construct it before our trip, from now on we will both have a changing room outside our doors. if the weather is rainy I figure a golf umbrella over the ring would keep us dry.
Step 1: What you will need
10 foot 3/4" EMT electrical metal conduit
drill and bits
two ring-less cloth shower curtains, any shower curtain will work, but the ringless give privacy even above the hanger rod, a regular shower curtain hangs an inch or two below the rod. shower curtains were chosen as they are meant to get wet without trouble and are designed to give privacy.
flat aluminum stock
two stainless bow eyes (big U-bolts for attaching the bow rope to a boat) I got mine at Lowe's, a steel U bolt would work also but could leave rust stains, my bow eyes are rated for 6,000 lbs each, I should be able to lift the trailer by them!
a heavy rubber floor or welcome mat to stand on, something that will allow water and dirt to fall through easily . My store bought shower-tent floor tends to pool the water even with "drains' in it, a thick rubber mat with plenty of holes is more comfortable to stand on and dries quickly.