Bill Wonchoba When the end slaps the water the fish are scared into going deeper into the bag. Otherwise , as the seine net bag is hauled in they can escape out of the edges.
its called plunging and the stick has a cup on the end, the idea is to put a fence of bubbles below the water to turn the fish around, and back into the net,,,,,,,found it to be a useful as trying to seduce a woman after you've thrown rocks at her
