For what a homemade "emergency" fishing kit weighs, and for it's small size, why not have one with you BOB or a small fishing setup with your PSK?
Besides a food source on land a water, the fishing kit has many other uses, such as line for tyeing things, lures can be used as small hanging "flashers" that may or may not attract attention, etc.. If stranded, the fishing gear could keep your mind active, and give you something to do.

I will always have a fishing kit in my BOB, and PSK (personal support kit).