The cane arrows I have done up this past year, the nocks were done like wood self nocks and wrapped for strength.
Now for the point end, I took the cane that I cut to reach the desired length, and split into about 4 pieces with a knife. Then I dripped some superglue in the hollow point end, and shoved the split pieces in the hollow, to fill. Then took more superglue and drench down about the last inch, where the point taper would be. Let this dry awhile, then I tapered with my tru- taper tool.
I was concerned also, that I might have tear outs or splits, when using the hand taper tool, but the superglue kind of holds the fibers together. It worked!
Heck, you could shave down some broken poc, or fir or any other broken shaft pieces! Save your money on the hardware dowels. Even small diameter limbs from the yard, just look around!
Love them cane arrows!