The 'human life-saving' way is simple: if you are spotted by an enemy fishing boat make sure it spots you at doing a heading that was not your original course, once you get far away enough, out of sight, you return to your original course. Simple enough, that's what I would do. No way that they can report anything useful about you (except that you exist of course...If that's too much you need to kill them. At war you kill your enemies.)
The best solution is not getting in sight at all.
