Godsogd

I live at 5000 feet near Lake Tahoe where we get very short swim seasons and have no problems with the grasses that apparently can grow through liners, they don't grow here Is it okay to set my 18' soft side pool up directly on the lawn? It'll only be set up for about 3 months and then I plan to store it till next season. I realize I'm sacrificing the grass underneath, but will grass to vinyl contact damage the liner?