My plans look a little like this. Possibly a shorter bow.
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The bone tip isn't finished. I'll bore a hole up the back side of it to fit the skinny shaft extension (which is filled with hidden spring steel). Then either set a short thin flake in it with no barb or just file it to a point and and the back on a curve. Bore a hole through the middle and make the toggle laynard like above. I used artificial sinew and a blend of flemish twist and traditional braiding to make the lanyard which I saturated in TB3. The triangular stone point will go into a piece of boo with epoxy and artificial sinew. I had a little razor sharp back barb flake to make it toggle also but I lost it. Probably droped it into my shoe.
Pluss I have the big pole spear like in the video I posted. I had the idea to try to make them in wood with a toggling stone point. Still need the surgical tubing for the activator.
The spool above. I used to go with the metal clips but I kept breaking them, cutting my self, breaking drill bits etc. Pluss they rust so I switched to plastic. Cheap, Easy, and no rust. I don't make the spools to make a mint. I want to facilitate carp murder. A few weeks ago I came up with a plan to clean up the insides more quickly and easier.. which means I can make them faster!