From time to time, I have read of people who loved to polespear, but just couldn't anymore. Due to age, or arthritis, or injury, or whatever, they just couldn't grip the spear well enough to hunt effectively. This idea of a simple release came to me the other day, so I thought I would toss it out for anyone to play with, or improve upon, or poke holes in.
It's not really a trigger, exactly, because it won't restrain the spear on it's own. It requires only the tiniest finger pressure to hold, though.
The rigid end was formed by just soaking the last couple inches of the cord with epoxy, and wrapping with shrink wrap tube.