I think perhaps the only problem I can find is that because the hat decelerates in the x direction it can sometimes be hard to tell where it's going to land. Other than that, the concept is really cool and the game is really fun to play!
Thanks for the feedback. I thought that it might be a bit too easy if the player could launch the hat and run directly under it, but this could just be a case of an easy mechanic being better than an unfun mechanic.