I enjoy these types of games, but...
There is just a bit too much luck involved in this game. You can shoot hundreds of times a level just to get it into some of the more difficult baskets. This is due to (in my opinion) the inability to exactly choose the strength of the shot. If you allow the play to choose, rather than a automatic up/down of the strength it would greatly enhance gameplay. Other cannon games allow this type of player strength adjustment by using how far the pointer is away from the cannon to adjust strength.
Other than that it is a well done game that I really liked playing!