Every stack in our park stood at least fifteen mobile homes high (with the occasional RV, shipping container, Airstream trailer, or VW microbus mixed in for variety). In recent years, many of the stacks had grown to a height of twenty units or more. This made a lot of people nervous. Stack collapses weren’t that uncommon, and if the scaffold supports buckled at the wrong angle, the domino effect could bring down four or five of the neighboring stacks too.