Regarding fishing stuff in a PSK: There was a USAF pilot quite some years ago (70's? 80's?) who bailed out over the Sierra Nevada. He wound up in the high country of the sierra. He couldn't go down river because of sheer rock and waterfalls. He couldn't go over the icy/snowy sides of the deep canyon (the Sierra are heavily glaciated; think fjord deep).

He did find some fishing gear and a jar of jam. He lived on fish and the jam until Spring when the snows melted and he was discovered by some hikers.

I think the fishing thing depends a lot on where you are. In the glaciated Sierra Nevada, there are lakes and streams all over the place, and trout is pretty available. Here where I live in Los Angeles? Good luck, although I suppose fishing line could be used for making snares?

My approach is to have a basic PSK that's tailored for my local area. If I take a trip/do something a bit unusual, I re-evaluate my PSK before I leave.

How do you drive a survival conscious person crazy? Tell him, "for goodness sake, make sure your PSK is up to speed."