Yeah, thats a good idea. But i think it should be a little bit more expensive, like 20 scraps and 10 wood, to build a foundation with a metal bar. Because when its this expensive, they could handle it like that the shark does no damage to it at all. So when your raft is really really big, you dont have to check the bottom floor every hour. And when they implement other animals like a whale, they could add that this reinforced foundation only gets damage by a whale, which is very rarely and you can only see some whales after a specific point in the story of the game or after something like 4 hours. So if you dont have reinforced foundations, the whale instantly breaks a wood foundation, so you cant knock him away, like you can with the shark.