under the tub is a foam board then a plywood support, this gives room for the plumbing above the floor of the coach.
so no weight on the plumbing, it free floats in air. the basic p trap and line to flow water down and to the tank.
no room for me to get under there. get to work on my back, with one arm going through a access hole. to do all the work blind under the tub.
but that is just screwing together the plumbing.
if i have to remove again. it will cost a bunch of money. but maybe i will change to just a shower, seeing as the tub is way to small for everything except a small kid, and i got's none of those.
been raining hard past week. but next should be dry. will get out and check then, as i also need to work on my heater.