Well you wouldnt want to heat a trailer with a rocket stove, no chimney and from what Ive experienced with mine and read, they are insulated to direct the heat upwards, the sides get hot but not as hot as a woodstove.

Mine was made by Grover
http://www.stockstorage.com/ and I have a piece that slides in for burnin charcoal as well....
The only problem with a woodstove that is small enough to fit in a TD/TTT is that it will have a real short burn time, maybe a few hours...I sleep soundly lol. Now I was contemplating the idea of some small paper bags with a few self starting charcoal briquettes pre made and if you wake up cold toss it in and light it and it will start burning much faster. I do really like a wood stove and not worrying about runnin out of propane in the middle of the night...hence why i traded away my propane cookstove and now just have the rocket stove.
I like the look of these and can burn coal in them and they arent super expensive
http://www.fatscostoves.com/... these are the Cadilac of boat stoves, but your payin for it
http://www.marinestove.com/ ... these are a little cheaper and made right here in Pa.
http://www.shipmatestove.com/Results.cfm?category=6 ...These are real nice, not as expensive as other stoves but its an import so its gonna cost a few bucks
http://www.windysmithy.co.uk/index.htm ...here's another imported stove that looks interesting and is small
http://www.salamanderstoves.com/docs/52/the_pipsqueak/#.TtToFfS-k6Y.facebookLots of options out there. I think my next build might have a wood stove.
deryk