Rob,
Here is what worked for me. I took one of my carbon shafts and with a high-quality cut saw, sliced it into short 1 1/2" long sections. I put an insert into both ends. Then, using a short section of 8/32 fully threaded rod, I screwed the short carbon extension on to the end of the arrow with "Locktite" on the threads. Then I added the point to the extension. I had to reduce the point weight by 25 grains to maintain the same arrow flight, but the arrows have held up just fine.
Mark