I put a 2 foot x 4 foot piece of 3/4 inch plywood in the cargo area behind the 3rd row seats to make the area even with the lift gate. The board fits perfectly and can be removed easily if the seats need stored or I need the full cargo space. It also provides a hidden storage area underneath. My Grand Caravan had an optional shelf that we had installed, but there wasn't anything available yet that I could find for the Pacifica. (The board was available already cut at a home improvement store. I also bought a thin board the same size for on top of the plywood for a smoother finish.)