I used 3/8 ply for the decking. It went down quite nicely and is very strong. Now that the deck is on, the boat is super stiff and strong, yet I can still lift up either end by myself. Before I build the cabin top, I will be building the structures for the keel box, and most of the cabin interior structure since it is open and easy to work on right now. I now have my yearly training and checkride for work coming up at the end of the month, so I won't be working on the boat much for a few weeks. I'm really looking forward to getting back onto the project in March!