* * *

I imagine this situation to be difficult and painful but not fatal.

What if somebody else was present on this seemingly deserted island? Coming here to avoid being caught in the storm and hiding from the obviously dangerous villains. Maybe even sneakily sabotaging their boat. Powerful cutting tools may not be available but the situation is no longer hopeless.

I'll do my best to come up with a follow-up picture.

Also: See my comment.