Valujet, everglades...have we learned nothing???
Plane's on fire, land ASAP, and I don't mean "nearest suitable"...ASAP means land on the desert below you, rather than out of control attempting to reach an airport...in the Valujet example, if the crew had done that (and I have flown with that Captain and she was "top notch") maybe the outcome would have been the same...but if only 20 out of the 100+ on board survived, well...
As for dumping fuel, if you have to manuver a heavy A/C at low altitude, especially if it's 100 tons overweight, and yoiu've never done it in an emerg situation, if you survive, you'll dump fuel next time...immediately...