Another blast of Arctic air moved in so I wasn't able to take the pics yes. Some GREAT ideas!
The one the makes the most sense in my mind's eye is removing everything until I get to horizontal (or vertical) and running an extension to the edge of the bay, drilling out a new hole in the bottom and using 2 90's and a coupler to come just passed the side of the RV. Easy on/off with hose. No fiddling around "under" anything. When it warms up I'll check and see if that solution is on the same track as reality.
I'm a little hesitant to make holes in the swing down hatch. I'd like to keep the hooky/unhooky stuff on the outside, so it would need to be rounded "slot" rather than a hole.
Thanks,
Bill