While Cyan and Forrest were dealing with tires, Lou and I worked on the shower floor. The unique requirements of the monster truck's camper wouldn't allow for a standard shower pan or stall. It's all going to be built from scratch, starting with a floor that tilts toward the drain.
Angle here, taper there, measure, cut, test fit, adjust, lather, rinse, repeat. But we got it done.
That's the drain in the corner
I don't know what the next step is. Lou has it mapped out. I just assist. And make unsolicited suggestions. And ask questions. And kibitz.