Years ago I was taught to tie a very specific and useful knot, while working as a deckhand aboard a shrimp trawler on Austrailia's Northeast coast.
It was used to secure the line that is threaded around the open bottom of the net, thereby cinching it tight and keeping in all the catch.
It was a simple, but repetitive knot, so you built up a kind of braid in the rope as you tied. To release, we would hoist the nets over the catch basin, with the knots at the bottom. You grabbed each end, and simply pulled in the release rope. The released rope alternated with each knot. So, if you jerked hard on the two ends alternately, the knots of the braid came undone one by one, and the cinch opened, and all the fish fell out the bottom of the net, into the basin.
I loved this knot. I used to tie my shoes with it, but now I'm beggining to go senile, and I can't recall what the knot was called, or how to reproduce it.
Can anyone help me?