Originally Posted by calliopeguy
...but you ain't gonna drive off or roll down a ravine.
Well, last fall my daughter and I were winterizing our trailers. I always use chocks, regardless of circumstances. My trailer is kept in a nice, concrete, level driveway. Daughter has to put hers (TT) behind mine, on the lawn during the winter so I have a place to push snow.
We backed hers in place, set a cinder block under the front screw jack, and started turning the jack handle. After a while it lifted off of the truck - and started rolling backwards across the lawn towards a small (8-10') revine between us and the neighbors. We both grabbed onto the front of the trailer, but it wasn't impressed. Luckily, she doesn't have a wheel on her jack, and it sunk into the grass leaving a 4' long furrow
in my lawn.
Lesson learned; "regardless of circumstances"
, topography, etc., CHOCK IT!!