I would ask your park manager what others have done there - they'll know the climate, be familiar with your place and others like it, as well as knowing who to call to do the work.

What I would do is this, I've seen others do the same.
Scrounge up several hundred bags of leaves, nice dry ones and place these tightly around the perimeter.
What substance is the home above?
A concrete pad is good, I think.