Fly fishing has a long and illustrious history that goes back to the Greeks, or maybe eariler. What we most know about is fly fishing in England, from the 15th Century forward.

Before the use of Splitcande Fly Rods, the fly rods were longer and made out of various section using different woods.

Then with the expantion of the British Empire, other materials became available from the four corners of the world for building fly rods. Cacutta Cane from India, Greenheart for (I cannot remember where, but I think it is from eithe Central or South America), and Tonkin Cane from China.

Wherever the British Empire planted the Union Jack, they did two things, they planted roses and introduce trout.

So maybe the Green Spear is a spear made from Greenheart, which was used for stouter fly rods instead of Tonking Cane.

Catch the fish an pass the fish and rod off to the bestman, who would bring it into the shallow water, while the fly caster was using the second fly rod to catch the next fish, while the bestman would spear the first fish, and then remove the hook from the fish's mouth when the fish was on dry land.