You guys forget that just because a small business is trying to survive - not all can afford insurance. An owner has to make enough margin with their sales to live - that's darn hard to do these days. Usually just the sales tax collected and remitted to the state is more money than the profit that is left. Somebody in that town knows where that trailer went. I'd put a big notice in the closest newspaper. Darn that makes me so angry.
Anybody that owns a camper, trailer of any kind should paint their phone number on the top in the largest letters possible - or some identifiable symbol from the air.