Nice game but I honestly initially didn't get when does the hookshot overheat and how to cool it down. I think that you should signal this somehow within the game instead of having it on the 2nd page of the instructions.
In terms of some quality of life improvements, I think that switching which side you're shooting from should be automatic, it feels a bit unnecessary to do it manually. Also, the ball can sometimes get "stuck" and then hookshot needs to be canceled (manually) to proceed, and shoot it again. I think that you should just make it that if the ball can't go any further and it's already next to the wall hook just resets automatically and you can continue.
These are some small details but could make the game a lot easier to play.