If you cleared Day 1, you take a gamble. As soon as you hit Day 2, catch a few fish, throw off the balance, and sink the boat. This gives you a chance to build a much better economy than Day 1. Just a heads-up: the balancing is pretty rough and the game has no real ending—nothing happens on Day 5, so don't stress if you get stuck on Day 4!
https://itch.io/jam/bezi-jam-13/rate/4932120