This game was really fun. I think it's best game from this jam I've played so far.
So to even say something bad about the game I is really hard. I think the game functions as is. But I think for example if fuel would be constantly consumed (but only by a little) even when fishing it will add some more depth to the gameplay. There would be choice not to fish as specific point also fishing would require more skill because the faster you catch fish the better.
Only confusing thing about the game is needing to pick up the fish you caught. I get that if you have almost full inventory you don't want to pick up every fish, but it took me some time to realise I wasn't picking my fish. Maybe having option to drop items from inventory would be more clear.
But these are just minor points that would made the game even better and the game already good is.
Edit:
Really loved the economy in this game.