Sounds like a rough development (I can relate)! I hope your game gets more attention, but I would say you might want to make the instructions a bit more clear (although your reply is already very helpful, which is good.) If you were to expand upon this more, a throw button would be nice as lining up shots could be quite difficult (although rewarding when you hit it, but not everyone has the patience!)
Good luck on your future games, and thanks for a fun little experience, despite the rough edges!