Sunken shower pan and grate, no curb?

Has anyone done this or given it any thought? No bathroom walls, just a curtain.. Mount the valve and shower head in a cabinet if you don't like the look.
It might be labor intensive, but the rewards of not having a shower curb and the extra floor space might be worth it..
I can bend up and solder a 1" deep sheet metal pan, either raise the rest of the floor, or drop the floor joists in the shower pan area and then build some sort of a grate (teak maybe) the depth of the pan to make the shower floor level with the trailer floor.. Drop the front of the trailer a little to create fall for the water to find its way to the drain soldered in the very front, piped to a hepvO drain p-trap. I could cover the plywood with kerdi and then linoleum I have laying around.
Could it be done? Any potential drawbacks other than my GF making me leave when she showers?
It might be labor intensive, but the rewards of not having a shower curb and the extra floor space might be worth it..
I can bend up and solder a 1" deep sheet metal pan, either raise the rest of the floor, or drop the floor joists in the shower pan area and then build some sort of a grate (teak maybe) the depth of the pan to make the shower floor level with the trailer floor.. Drop the front of the trailer a little to create fall for the water to find its way to the drain soldered in the very front, piped to a hepvO drain p-trap. I could cover the plywood with kerdi and then linoleum I have laying around.
Could it be done? Any potential drawbacks other than my GF making me leave when she showers?
