Filmmakers found box-office riches in the pairing of Matthew McConaughey and Kate Hudson in "How to Lose a Guy in 10 Days,” a smash romantic-comedy hit in 2003 thanks to the undeniable chemistry between the two stars. But even their buoyant presence can't save "Fool's Gold” from sinking without a trace, thanks to a script by director/co-writer Andy Tennant that is overloaded with needless supporting characters and...