How about storms? That when there is a storm you have to make sure everything will stay on your raft. Or bits of your raft break of after a while. and to make sure you survive you have to make a little house to keep yourself warm and make sure you don't wash away.
Hi! I have this problem that, if the sharks destroys a foundation with a cooking station or a water purifier on it, I can't place a new foundation. Unless you built all around it. I have also noticed that you can't destroy a cooking station/ water purifier unless you take the foundation away.