Double layered deck was chosen as the better solution. One major disadvantage with double layered deck was that, it increased the thickness of the deck by more than double.
Building a curved deck, or a deck with fiberglass reinforcements were not considered necessary for testing intuitive control as it was already achieved before. The top and the bottom decks were built out of a single 3⁄4 inch plywood measuring 4 feet by 1 foot.