Flush (by Carl Hiaasen)

But with everyone mad at their father, hired goons guarding the refloated boat, members of local law enforcement paid off by the owner, and the owner's son beating up on Noah, getting that proof looks well-nigh impossible. That is, until Noah comes up with a plan that involves a tattooed barmaid, a stolen motorboat, and thirty-four bottles of fuschia food coloring.

There are holes in this plot big enough to float a casino boat through, starting with why the owner is so determined to dump his bilges, thereby polluting the beach his own son swims in, instead of pumping them into a sewer tank. He says it's because the owner is a cheapskate, but it has to cost less than his hired goons, not to mention renovating his boat and paying $10,000 in fines. But Carl Hiaasen is on a soapbox here, and logic or other points of view aren't going to get in his way -- bad guys are bad guys, for no apparent reason, and good guys can lie, steal, and vandalize, as long as their hearts are in the right place.

That's not to say that there isn't any fun to be had here. FLUSH has some aspects of a mystery and some of a caper novel, action, humor, a bit of suspense, and some interesting characters. The resolution is unlikely, and there are some whopping coincidences, but if you try not to think too hard it rolls along nicely and passes the time, much like a Hardy Boys book with potty humor.