I have been repairing broken arrows using Van's method every time I have a little left over urac from my bow making.
I have done some with cedar, chundo, and lately 3/8th ramin hardwood dowels. Nice to have a hardwood foot on a softer wood shaft.
I cut the tapers on my point taper jig, over lap the shaft surfaces, put 6 clothespins on the splice to give me a level surface to put 3 spring clamps on and let the glue cure.
When I remove the clamps I file off the excess glue, heat straighten the spliced area, chuck the shaft up in my drill and run it through the Trad Gang taper jig( look at the Trad Gang "How to" section if you are not familiar with the jig) to round everything off and reduce the 3/8th dowel to 11/32. A little finish and I bring what was once a great shooting arrow back from the dead. Pretty slick! Here is a couple I did today, one ash and one chundo both with a ramin dowel repair.
You do have to flex the splice vigorously before you shoot it to make sure you have a good glue bond. I have had one come apart but the rest have been tough as nails. My experience with urac over the years has convinced me it has few equals in the wood bonding area and I wouldn't use anything else for this type of repair.