If I had someone to play this with, I can see it being pretty fun. Well, the singel player is just a tad too hard for me. If I don't grab the balls immediately and throw the off at the first time, they just pile up, until I sink. No time to hit the engine. On the other hand, if the RNGesus doesn't like me, all the balls pile up instantly in one corner, tipping over the boat.
I like the basic idea of just throwing things out and driving forwards. The gameplay in itself was good, the controls fluid. Just a bit hard on the difficulty.