
A random delay before fish bite adds a surprising amount of fun for how simple it is. With the delay, I actually have to watch my bobber while I'm driving, and I want to cast again as soon as possible after reeling in the line instead of waiting to line up some easy positioning. I'm feeling optimistic about making something people will like playing!
Next thing I think is giving you a reason to keep driving continuously. I'm doing it here for funsies; I could just park in front of a lake and cast without penalty. So I'm planning to add timed checkpoints, like an arcade racing game, that you have to hit or else the game ends. (Once I've done that, I might change it so that driving into deep water no longer ends your game, it just slows you down a lot, which will probably end the game as a secondary effect but not as suddenly.)