I'm not all that familiar with the series, but they're usually on an island, right? If you're talking about shore fishing, I think it would be extremely difficult if not impossible to be successful with just the fishing gear taht is included in a survival kit.

Along the same lines as what Max said, experience is the key. If someone has never fished before, he probably won't be successful fishing in a survival situation. In addition to general experience, familiarity with the area will also affect the results. I, for example, would probably have more success fishing in a mountain stream in Virginia than I would fishing in a river in Africa, because I have a better idea of what fish will be where and what they'll bite.

Not sure if that rambling made any sense or not, but I hope that answered you're question.

Chris.