I use 1 part pine pitch (boiled and clean), 1 part fine ground charcoal , 1 part ground plant fiber. It is very strong , I glued a 8 inch point to a forshaft with no hafting and could deflect the shaft 3-4 inches . It took about 30 flexes and a very cold day four months later for it to let go.
The trick is to have your shaft and point hot for a good bond. it doesn't like to stick to cold things. Also wrap it when the pitch is soft so your hafting cuts into it.
Now if you have a problem with the pitch sticking to your fingers, dip your fingers in a cup of water every so often, helps to get it were you want. I just lick mine.
after the pitch sets good do one last quick heat to bring up a gloss on the pitch if you like. If you finger it you will lose the gloss.
I have been told birch tar makes a far better glue than pine sap. It's next on my to do list but takes more work to get and not many Birch around me. for those that will ask , youtube making birch tar, also has many other uses.