This is a really clever idea. I was hoping there was something else on the island to do. Perhaps in a future version!
Viewing post in Just fishing jam comments
Adding a shop would take things to a whole new level. I'm thinking just some buildings, a town, a dock, trees. Another idea, have a river where you can catch some other type of fish. Lots of possibilities, but I wouldn't want to see it become too complicated anyway, unless you were going to expand it into a longer game with bigger challenges.