Aluminum footings seem to work great on my carbons that I use for small game or stumping but no matter the shaft material the reality is that it only moves the breaking point back the distance of the length of the footing as installed.
Back to Hickory shafts. I have some 5/16″ hickories that just keep on shooting. They must be 10 – 15 years old, but they would be spined too light for what Dave hunts and 11/32’s would probably be too heavy as mentioned. What if you took some 11/32’s and made up some tapered shafts? 11/32 on the business end and 5/16″ on the nock end? Anybody ever try that?