I'll follow your question as that is what we want to do in our MH. The garden tub side is too high for us old folks to step over easily.
One way to keep the shower pan low is use a HepvO valve
instead of a standard"P" trap in the drain line.
2000 Winnebago Ultimate Freedom USQ40JD,
ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA." My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy