First there is no mountain, then there is a mountain, and then there is no mountain again...
Like I keep trying to tell my boss, there's no "perfect answer" just compromises. This is especially true in PSKs. My personal approach is to have several different PSKs. The one I take in the woods is different than theone I take to work. I don't have a fishing line or fish hooks in any of my kits, but I do have paracord, dental floss and a few needles. The needles can be bent into fishing hooks and the dental floss or inner strands of the paracord can be fishing line. A needle can also be used to pin a bit of bait to a figure-4 trap.
In the end though thinking and re-thinking your PSK is actually fun, isn't it?
-Blast