Thanks for all the input (hijacking-dueling rants aside).
Thanks for the links for the short rods (Rock posted a good link that looks interesting). Good tip on the safety pins also - I've just used wire to make the loops, but they were kind of soft and easily deformed.
I agree that using a trot line, bank lines, and fish traps should be the best way to go - it's basically trapping - the most efficient way to obtain food.
I tried a trot line a few years ago, thinking it was going to be easy. I was wrong, there is some skill to it. You basically have to read the water and understand where the fish will be in a given type of water (type of fish, plus depth, speed, and temperature of the water, etc. are all considerations). It seems easy, but you need to try it before you can count on it.
Just like trapping, you need to know where to place the hooks so that the fish will find them.
I think it takes skill (meaning practice) to be able to effectively catch fish with traps and bank lines. It may be easy in some areas, but all rivers are not the same and don't have the same type of fish. I would like to give it a try, but fishing regulations might make it difficult.
A few have posted success with trot lines, has anyone taken the time to make a primitive fish trap and used it effectively?