Hi Folks,
First, when I read a thread about the problems of emtying the head materials of a 25' C-Dory, I realized how lucky we are to have a 22' with the Porta-potti and its flexibility. It is easy to empty, just separate the bottom from the top, lug it to the men's room (this job is always ours),empty. When I had a Vanagon I had a small piece of tube that fit aver a faucet so I could clean out the Porti-Potti. (I still think a Porti-potty is the best invention since sliced bread.)
It is easy to move it from the place under the forward bunk to the cockpit and back, although it does get heavy as the cruise goes on.
As for the shower, I have a Sun Shower. What I hope to do is make a shower stall by hanging a round piece of plastic tubing from the cockpit cover frame, hang a shower curtain on the tubing, and use it for showering and evening bath room. I would store the Sun Shower full in the motor well during the day so as to heat up the water.
To clean, use liquid soap, a natural sponge, and a bucket. Lather up and use the Sun Shower to rinse off. I have Deck Tiles on my cockpit floor so the water can run to the sump in the stern. I can then pump it out into the motor well which can be blocked until I go to sea.
Really quite easy.
Fred