While poking around underneath the trailer I saw our LP port for the first time. It has what appears to be a ball valve (handle turns 90*) and it was in what I would assume to be the open position (handle parallel to the pipe. I didn't smell gas nor did I feel anything, so there must be something that stops the gas when nothing is plugged in. I turned the handle to what I think is the closed position (perpendicular to the pipe).
I won't say there is no chance we'll ever use it, but we've had the trailer for over a year and never even thought about it. I'm not going to remove it, as the next owner may well want it, but it is just a few pounds of extra weight for us. Is there anything else I can do to make sure that this isn't a gas leak? Leaking propane is expensive enough, but if something blows up it gets REALLY expensive!