How to keep thieves from stealing our 16' trailer?

Take the wheels off of it and park another vehicle in front of it. If you don't have a vehicle you leave at home while gone, I'm sure one of the neighbors have one they'd like to park someplace else.

Granted my TT is parked in the fenced back yard and the snow prevents anyone from getting to it, the neighbor parks several of snowplow trucks in my large driveway when we're gone. It gets them out of his driveway and works for both of us.

Bill