Nice idea, but the trampoline mechanic is not intuitive enough for me. As I am playing with a mouse I think it would be more effective to complete the trampoline on mouse-release instead of the second click. That would make the task a lot faster to achieve resulting in a more responsive and fun game.
Well done never the less!
P.S. Add a 30 sec video of the gameplay in the description to make it standout from the crowd.