'Maybe we should wait' {spoilers}
Out of curiosity, I've just rewatched this, and I worked out what was nagging me about the story the first time round. I'd like to hear other people's opinions on this, please:
The boat capsizes. Luke's convinced that it's going to sink fairly quickly, and that making a risky (at best) swim for an island that's "somewhere out there" is their best course of action. They have one EPIRB device, that presumably they're counting on to attract rescue.
So they leave Warren on the capsized hull, *with* the EPIRB? If Luke is so sure (no-one else seems to have an opinion, including Warren) that the boat is going to sink, and presumably anyone who stays with it will drown, then why leave the EPIRB there? What sense does that make?
And what if the boat doesn't sink? Wouldn't it make sense to stay with the boat for a while -- where at least they're not getting exhausted and dehydrated in the water, and will be far easier for any rescue plane to spot than as just little dots in a wide ocean -- and if it does sink, try the swim to the island then?
And as for the ending, how did Kate ever get rescued? No-one knew where they were, and Warren had the EPIRB -- how would they ever spot her on that little blob of rock?
I can think of things they could have said or depicted as answers, both pro and con, to all these questions, but they didn't. This is probably one of those screenplays that could have benefited from a bit more development time, a couple more rewrites, before they actually filmed it.
You might very well think that. I couldn't possibly comment.