A gig handle is what we put a multi pointed barbed head on, you guys prolly call them a fish spear, we use them for harvesting frogs out of farm ponds and streams. We hang coleman lanterns or bright lights on the front of a flat bottom boat and float down these crystal clear streams in the Ozarks and spear or gig suckers and other rough fish for fish frys. A handle is usually is about 2-2.5" in dia and 10-14' long.
It's a dying tradition, people just go to a fancy restraunt to eat frog legs instead of going out and catching their own.
Okay, now it makes sense. We use to gig salmon in the rivers on the coast when we were kids. That would probably get you arrested these days.