The problem with having a
RMH in a tiny trailer home is the mass. You are usually confined by the weight limit of the trailer and the house and you posessions usually are maxing that out. Trying to add in an additional 1000-2000 pounds for a
RMH will push you over the limit. There was some talk at one point of making a portable system that used
water as the mass. This system could be stored in the trailer while moving, placed out side when at your location and filled with water. After the water was heated with the
rocket stove, you would then pump the water through radiator system in the home to get the radiant heat effect. This system has not been built, so it is all theoretical.
In reality, I am not sure it would be worth the effort. When you are only trying to heat <200 sqft, using a small
Sardine Stove, while not as efficient, would be much more simple. It wouldn't take much to heat up the place, and if it was well insulated, it would stay warm for quite a while.