I love the idea of fish spawning for some short period of time! I will look into it, thanks! It brought me the idea of bringing the time passing also by the change of light - the longer you play, the more dark everything becomes. And I could add some points system as you suggested. Additionally, I imagine a pirate saying something like "Wow, we did it before the noon. A grog time now!" when you finish early, or "Arrgh, I hate fishing after the dusk" to add some reasoning to the higher/lower points. :D
I plan to make colliding with rocks also cause the need to restart the game, I think it would play nicely with fish available for just a short period of time.
Thanks for the bug report. I will fix the clicking after win/lose. I considered just blocking boats movement after losing/winning condition is met. I will check your suggestion, thank you!